Allow longer than 1k char links

[lnsy-dev]

Allow users to have more than 1k in links.
I previous put a limit on the number of characters. I think there was a buffer overflow somewhere. Look into this and fix it.

[eagle275]

think that has more to do with the encoding ... even for short strings the produced qrcode is already 25 columns x 25 rows - and contains 30% overhead for error-correction if using the "H" . By my rough calculation 25x25x2-30% leaves about 875 bits .. this is the limit for the encoded short string .
More characters demand more columns and rows - but according to the license holder - a QR-code's max information content is only about 8000 bit (64x64x2 - 2% errorcorrection = 8028 bit) This leaves just enough room to encode ~ 1024 ASCII characters, UTF8 unicode uses more than 1 bytes for special characters, non-lattin-letters and so on - thus reducing the available number of characters encodable - And I dont think QR-code supports more than 64x64 format.