Upgrade bootstrap to 4.1.3 (from 4.1.2)

Author: bdukes

package.json

@@ -15,7 +15,7 @@
     "alpaca": "1.5.24",
     "blob.js": "1.0.1",
     "bluebird": "3.5.1",
-    "bootstrap": "4.1.2",
+    "bootstrap": "4.1.3",
     "bootstrap-accessibility-plugin": "1.0.6",
     "bootstrap-datepicker": "1.8.0",
     "chart.js": "2.7.2",