diff --git a/backend/Pipfile.lock b/backend/Pipfile.lock
index e787fa82..bfce41e7 100644
--- a/backend/Pipfile.lock
+++ b/backend/Pipfile.lock
@@ -27,10 +27,65 @@
         },
         "certifi": {
             "hashes": [
-                "sha256:47f9c83ef4c0c621eaef743f133f09fa8a74a9b75f037e8624f83bd1b6626cb7",
-                "sha256:993f830721089fef441cdfeb4b2c8c9df86f0c63239f06bd025a76a7daddb033"
-            ],
-            "version": "==2018.11.29"
+                "sha256:78884e7c1d4b00ce3cea67b44566851c4343c120abd683433ce934a68ea58872",
+                "sha256:d62a0163eb4c2344ac042ab2bdf75399a71a2d8c7d47eac2e2ee91b9d6339569"
+            ],
+            "version": "==2021.10.8"
+        },
+        "cffi": {
+            "hashes": [
+                "sha256:00c878c90cb53ccfaae6b8bc18ad05d2036553e6d9d1d9dbcf323bbe83854ca3",
+                "sha256:0104fb5ae2391d46a4cb082abdd5c69ea4eab79d8d44eaaf79f1b1fd806ee4c2",
+                "sha256:06c48159c1abed75c2e721b1715c379fa3200c7784271b3c46df01383b593636",
+                "sha256:0808014eb713677ec1292301ea4c81ad277b6cdf2fdd90fd540af98c0b101d20",
+                "sha256:10dffb601ccfb65262a27233ac273d552ddc4d8ae1bf93b21c94b8511bffe728",
+                "sha256:14cd121ea63ecdae71efa69c15c5543a4b5fbcd0bbe2aad864baca0063cecf27",
+                "sha256:17771976e82e9f94976180f76468546834d22a7cc404b17c22df2a2c81db0c66",
+                "sha256:181dee03b1170ff1969489acf1c26533710231c58f95534e3edac87fff06c443",
+                "sha256:23cfe892bd5dd8941608f93348c0737e369e51c100d03718f108bf1add7bd6d0",
+                "sha256:263cc3d821c4ab2213cbe8cd8b355a7f72a8324577dc865ef98487c1aeee2bc7",
+                "sha256:2756c88cbb94231c7a147402476be2c4df2f6078099a6f4a480d239a8817ae39",
+                "sha256:27c219baf94952ae9d50ec19651a687b826792055353d07648a5695413e0c605",
+                "sha256:2a23af14f408d53d5e6cd4e3d9a24ff9e05906ad574822a10563efcef137979a",
+                "sha256:31fb708d9d7c3f49a60f04cf5b119aeefe5644daba1cd2a0fe389b674fd1de37",
+                "sha256:3415c89f9204ee60cd09b235810be700e993e343a408693e80ce7f6a40108029",
+                "sha256:3773c4d81e6e818df2efbc7dd77325ca0dcb688116050fb2b3011218eda36139",
+                "sha256:3b96a311ac60a3f6be21d2572e46ce67f09abcf4d09344c49274eb9e0bf345fc",
+                "sha256:3f7d084648d77af029acb79a0ff49a0ad7e9d09057a9bf46596dac9514dc07df",
+                "sha256:41d45de54cd277a7878919867c0f08b0cf817605e4eb94093e7516505d3c8d14",
+                "sha256:4238e6dab5d6a8ba812de994bbb0a79bddbdf80994e4ce802b6f6f3142fcc880",
+                "sha256:45db3a33139e9c8f7c09234b5784a5e33d31fd6907800b316decad50af323ff2",
+                "sha256:45e8636704eacc432a206ac7345a5d3d2c62d95a507ec70d62f23cd91770482a",
+                "sha256:4958391dbd6249d7ad855b9ca88fae690783a6be9e86df65865058ed81fc860e",
+                "sha256:4a306fa632e8f0928956a41fa8e1d6243c71e7eb59ffbd165fc0b41e316b2474",
+                "sha256:57e9ac9ccc3101fac9d6014fba037473e4358ef4e89f8e181f8951a2c0162024",
+                "sha256:59888172256cac5629e60e72e86598027aca6bf01fa2465bdb676d37636573e8",
+                "sha256:5e069f72d497312b24fcc02073d70cb989045d1c91cbd53979366077959933e0",
+                "sha256:64d4ec9f448dfe041705426000cc13e34e6e5bb13736e9fd62e34a0b0c41566e",
+                "sha256:6dc2737a3674b3e344847c8686cf29e500584ccad76204efea14f451d4cc669a",
+                "sha256:74fdfdbfdc48d3f47148976f49fab3251e550a8720bebc99bf1483f5bfb5db3e",
+                "sha256:75e4024375654472cc27e91cbe9eaa08567f7fbdf822638be2814ce059f58032",
+                "sha256:786902fb9ba7433aae840e0ed609f45c7bcd4e225ebb9c753aa39725bb3e6ad6",
+                "sha256:8b6c2ea03845c9f501ed1313e78de148cd3f6cad741a75d43a29b43da27f2e1e",
+                "sha256:91d77d2a782be4274da750752bb1650a97bfd8f291022b379bb8e01c66b4e96b",
+                "sha256:91ec59c33514b7c7559a6acda53bbfe1b283949c34fe7440bcf917f96ac0723e",
+                "sha256:920f0d66a896c2d99f0adbb391f990a84091179542c205fa53ce5787aff87954",
+                "sha256:a5263e363c27b653a90078143adb3d076c1a748ec9ecc78ea2fb916f9b861962",
+                "sha256:abb9a20a72ac4e0fdb50dae135ba5e77880518e742077ced47eb1499e29a443c",
+                "sha256:c2051981a968d7de9dd2d7b87bcb9c939c74a34626a6e2f8181455dd49ed69e4",
+                "sha256:c21c9e3896c23007803a875460fb786118f0cdd4434359577ea25eb556e34c55",
+                "sha256:c2502a1a03b6312837279c8c1bd3ebedf6c12c4228ddbad40912d671ccc8a962",
+                "sha256:d4d692a89c5cf08a8557fdeb329b82e7bf609aadfaed6c0d79f5a449a3c7c023",
+                "sha256:da5db4e883f1ce37f55c667e5c0de439df76ac4cb55964655906306918e7363c",
+                "sha256:e7022a66d9b55e93e1a845d8c9eba2a1bebd4966cd8bfc25d9cd07d515b33fa6",
+                "sha256:ef1f279350da2c586a69d32fc8733092fd32cc8ac95139a00377841f59a3f8d8",
+                "sha256:f54a64f8b0c8ff0b64d18aa76675262e1700f3995182267998c31ae974fbc382",
+                "sha256:f5c7150ad32ba43a07c4479f40241756145a1f03b43480e058cfd862bf5041c7",
+                "sha256:f6f824dc3bce0edab5f427efcfb1d63ee75b6fcb7282900ccaf925be84efb0fc",
+                "sha256:fd8a250edc26254fe5b33be00402e6d287f562b6a5b2152dec302fa15bb3e997",
+                "sha256:ffaa5c925128e29efbde7301d8ecaf35c8c60ffbcd6a1ffd3a552177c8e5e796"
+            ],
+            "version": "==1.15.0"
         },
         "chardet": {
             "hashes": [
@@ -39,20 +94,55 @@
             ],
             "version": "==3.0.4"
         },
+        "click": {
+            "hashes": [
+                "sha256:353f466495adaeb40b6b5f592f9f91cb22372351c84caeb068132442a4518ef3",
+                "sha256:410e932b050f5eed773c4cda94de75971c89cdb3155a72a0831139a79e5ecb5b"
+            ],
+            "markers": "python_version >= '3.6'",
+            "version": "==8.0.3"
+        },
+        "cryptography": {
+            "hashes": [
+                "sha256:0a817b961b46894c5ca8a66b599c745b9a3d9f822725221f0e0fe49dc043a3a3",
+                "sha256:2d87cdcb378d3cfed944dac30596da1968f88fb96d7fc34fdae30a99054b2e31",
+                "sha256:30ee1eb3ebe1644d1c3f183d115a8c04e4e603ed6ce8e394ed39eea4a98469ac",
+                "sha256:391432971a66cfaf94b21c24ab465a4cc3e8bf4a939c1ca5c3e3a6e0abebdbcf",
+                "sha256:39bdf8e70eee6b1c7b289ec6e5d84d49a6bfa11f8b8646b5b3dfe41219153316",
+                "sha256:4caa4b893d8fad33cf1964d3e51842cd78ba87401ab1d2e44556826df849a8ca",
+                "sha256:53e5c1dc3d7a953de055d77bef2ff607ceef7a2aac0353b5d630ab67f7423638",
+                "sha256:596f3cd67e1b950bc372c33f1a28a0692080625592ea6392987dba7f09f17a94",
+                "sha256:5d59a9d55027a8b88fd9fd2826c4392bd487d74bf628bb9d39beecc62a644c12",
+                "sha256:6c0c021f35b421ebf5976abf2daacc47e235f8b6082d3396a2fe3ccd537ab173",
+                "sha256:73bc2d3f2444bcfeac67dd130ff2ea598ea5f20b40e36d19821b4df8c9c5037b",
+                "sha256:74d6c7e80609c0f4c2434b97b80c7f8fdfaa072ca4baab7e239a15d6d70ed73a",
+                "sha256:7be0eec337359c155df191d6ae00a5e8bbb63933883f4f5dffc439dac5348c3f",
+                "sha256:94ae132f0e40fe48f310bba63f477f14a43116f05ddb69d6fa31e93f05848ae2",
+                "sha256:bb5829d027ff82aa872d76158919045a7c1e91fbf241aec32cb07956e9ebd3c9",
+                "sha256:ca238ceb7ba0bdf6ce88c1b74a87bffcee5afbfa1e41e173b1ceb095b39add46",
+                "sha256:ca28641954f767f9822c24e927ad894d45d5a1e501767599647259cbf030b903",
+                "sha256:e0344c14c9cb89e76eb6a060e67980c9e35b3f36691e15e1b7a9e58a0a6c6dc3",
+                "sha256:ebc15b1c22e55c4d5566e3ca4db8689470a0ca2babef8e3a9ee057a8b82ce4b1",
+                "sha256:ec63da4e7e4a5f924b90af42eddf20b698a70e58d86a72d943857c4c6045b3ee"
+            ],
+            "markers": "python_version >= '3.6'",
+            "version": "==36.0.1"
+        },
         "cssselect": {
             "hashes": [
-                "sha256:066d8bc5229af09617e24b3ca4d52f1f9092d9e061931f4184cd572885c23204",
-                "sha256:3b5103e8789da9e936a68d993b70df732d06b8bb9a337a05ed4eb52c17ef7206"
+                "sha256:f612ee47b749c877ebae5bb77035d8f4202c6ad0f0fc1271b3c18ad6c4468ecf",
+                "sha256:f95f8dedd925fd8f54edb3d2dfb44c190d9d18512377d3c1e2388d16126879bc"
             ],
-            "version": "==1.0.3"
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
+            "version": "==1.1.0"
         },
         "defusedxml": {
             "hashes": [
-                "sha256:24d7f2f94f7f3cb6061acb215685e5125fbcdc40a857eff9de22518820b0a4f4",
-                "sha256:702a91ade2968a82beb0db1e0766a6a273f33d4616a6ce8cde475d8e09853b20"
+                "sha256:1bb3032db185915b62d7c6209c5a8792be6a32ab2fedacc84e01b52c51aa3e69",
+                "sha256:a352e7e428770286cc899e2542b6cdaedb2b4953ff269a210103ec58f6198a61"
             ],
-            "markers": "python_version >= '3.0'",
-            "version": "==0.5.0"
+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'",
+            "version": "==0.7.1"
         },
         "dj-database-url": {
             "hashes": [
@@ -79,10 +169,10 @@
         },
         "django-braces": {
             "hashes": [
-                "sha256:a457d74ea29478123c0c4652272681b3cea0bf1232187fd9f9b6f1d97d32a890",
-                "sha256:ba68e98b817c6f01d71d10849f359979617b3fe4cefb7f289adefddced092ddc"
+                "sha256:83705b78948de00804bfacf40c315d001bb39630f35bbdd8588211c2d5b4d43f",
+                "sha256:a6d9b34cf3e4949635e54884097c30410d7964fc7bec7231445ea7079b8c5722"
             ],
-            "version": "==1.13.0"
+            "version": "==1.14.0"
         },
         "django-cors-headers": {
             "hashes": [
@@ -138,11 +228,19 @@
         },
         "feedparser": {
             "hashes": [
-                "sha256:bd030652c2d08532c034c27fcd7c85868e7fa3cb2b17f230a44a6bbc92519bf9",
-                "sha256:cd2485472e41471632ed3029d44033ee420ad0b57111db95c240c9160a85831c",
-                "sha256:ce875495c90ebd74b179855449040003a1beb40cd13d5f037a0654251e260b02"
+                "sha256:1b7f57841d9cf85074deb316ed2c795091a238adb79846bc46dccdaf80f9c59a",
+                "sha256:5ce0410a05ab248c8c7cfca3a0ea2203968ee9ff4486067379af4827a59f9661"
+            ],
+            "markers": "python_version >= '3.6'",
+            "version": "==6.0.8"
+        },
+        "filelock": {
+            "hashes": [
+                "sha256:38b4f4c989f9d06d44524df1b24bd19e167d851f19b50bf3e3559952dddc5b80",
+                "sha256:cf0fc6a2f8d26bd900f19bf33915ca70ba4dd8c56903eeb14e1e7a2fd7590146"
             ],
-            "version": "==5.2.1"
+            "markers": "python_version >= '3.7'",
+            "version": "==3.4.2"
         },
         "gunicorn": {
             "hashes": [
@@ -159,46 +257,93 @@
             ],
             "version": "==2.7"
         },
+        "importlib-metadata": {
+            "hashes": [
+                "sha256:92a8b58ce734b2a4494878e0ecf7d79ccd7a128b5fc6014c401e0b61f006f0f6",
+                "sha256:b7cf7d3fef75f1e4c80a96ca660efbd51473d7e8f39b5ab9210febc7809012a4"
+            ],
+            "markers": "python_version < '3.8'",
+            "version": "==4.10.0"
+        },
         "jieba3k": {
             "hashes": [
                 "sha256:980a4f2636b778d312518066be90c7697d410dd5a472385f5afced71a2db1c10"
             ],
             "version": "==0.35.1"
         },
+        "joblib": {
+            "hashes": [
+                "sha256:4158fcecd13733f8be669be0683b96ebdbbd38d23559f54dca7205aea1bf1e35",
+                "sha256:f21f109b3c7ff9d95f8387f752d0d9c34a02aa2f7060c2135f465da0e5160ff6"
+            ],
+            "markers": "python_version >= '3.6'",
+            "version": "==1.1.0"
+        },
         "lxml": {
             "hashes": [
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-                "sha256:c4df4d27f4c93b2cef74579f00b1d3a31a929c7d8023f870c4b476f03a274db4",
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-                "sha256:d3266bd3ac59ac4edcd5fa75165dee80b94a3e5c91049df5f7c057ccf097551c",
-                "sha256:db0d213987bcd4e6d41710fb4532b22315b0d8fb439ff901782234456556aed1",
-                "sha256:dbbd5cf7690a40a9f0a9325ab480d0fccf46d16b378eefc08e195d84299bfae1",
-                "sha256:e16e07a0ec3a75b5ee61f2b1003c35696738f937dc8148fbda9fe2147ccb6e61",
-                "sha256:e175a006725c7faadbe69e791877d09936c0ef2cf49d01b60a6c1efcb0e8be6f",
-                "sha256:edd9c13a97f6550f9da2236126bb51c092b3b1ce6187f2bd966533ad794bbb5e",
-                "sha256:fa39ea60d527fbdd94215b5e5552f1c6a912624521093f1384a491a8ad89ad8b"
-            ],
-            "version": "==4.2.5"
+                "sha256:0607ff0988ad7e173e5ddf7bf55ee65534bd18a5461183c33e8e41a59e89edf4",
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+                "sha256:0a5f0e4747f31cff87d1eb32a6000bde1e603107f632ef4666be0dc065889c7a",
+                "sha256:0b5e96e25e70917b28a5391c2ed3ffc6156513d3db0e1476c5253fcd50f7a944",
+                "sha256:1104a8d47967a414a436007c52f533e933e5d52574cab407b1e49a4e9b5ddbd1",
+                "sha256:13dbb5c7e8f3b6a2cf6e10b0948cacb2f4c9eb05029fe31c60592d08ac63180d",
+                "sha256:2a906c3890da6a63224d551c2967413b8790a6357a80bf6b257c9a7978c2c42d",
+                "sha256:317bd63870b4d875af3c1be1b19202de34c32623609ec803b81c99193a788c1e",
+                "sha256:34c22eb8c819d59cec4444d9eebe2e38b95d3dcdafe08965853f8799fd71161d",
+                "sha256:36b16fecb10246e599f178dd74f313cbdc9f41c56e77d52100d1361eed24f51a",
+                "sha256:38d9759733aa04fb1697d717bfabbedb21398046bd07734be7cccc3d19ea8675",
+                "sha256:3e26ad9bc48d610bf6cc76c506b9e5ad9360ed7a945d9be3b5b2c8535a0145e3",
+                "sha256:41358bfd24425c1673f184d7c26c6ae91943fe51dfecc3603b5e08187b4bcc55",
+                "sha256:447d5009d6b5447b2f237395d0018901dcc673f7d9f82ba26c1b9f9c3b444b60",
+                "sha256:44f552e0da3c8ee3c28e2eb82b0b784200631687fc6a71277ea8ab0828780e7d",
+                "sha256:490712b91c65988012e866c411a40cc65b595929ececf75eeb4c79fcc3bc80a6",
+                "sha256:4c093c571bc3da9ebcd484e001ba18b8452903cd428c0bc926d9b0141bcb710e",
+                "sha256:50d3dba341f1e583265c1a808e897b4159208d814ab07530202b6036a4d86da5",
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@@ -210,51 +355,57 @@
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+            "version": "==3.6.7"
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             "hashes": [
@@ -292,19 +443,28 @@
             "index": "pypi",
             "version": "==2.7.6.1"
         },
+        "pycparser": {
+            "hashes": [
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-            "version": "==1.7.0"
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@@ -324,34 +484,136 @@
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             "markers": "python_version >= '3.0'",
-            "version": "==3.1.0"
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-            "version": "==2018.7"
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         "requests": {
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@@ -363,47 +625,48 @@
         },
         "requests-file": {
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             ],
-            "version": "==3.1.0"
+            "markers": "python_version >= '3.6'",
+            "version": "==5.0.0"
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         "social-auth-core": {
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+            "markers": "python_version >= '3.6'",
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         "stripe": {
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@@ -421,10 +684,27 @@
         },
         "tldextract": {
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+            ],
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+            "version": "==3.1.2"
+        },
+        "tqdm": {
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+            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
+            "version": "==4.62.3"
+        },
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-            "version": "==2.2.0"
+            "markers": "python_version < '3.8'",
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             "hashes": [
@@ -441,6 +721,14 @@
             ],
             "index": "pypi",
             "version": "==4.1.2"
+        },
+        "zipp": {
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     "develop": {}