Update Website binding MaxSize to 255

[Bwko]

Fixes #713

[appleboy]

LGTM

[lunny]

if 100 is enough for a URL?

[appleboy]

http://stackoverflow.com/questions/417142/what-is-the-maximum-length-of-a-url-in-different-browsers

I usually make the URL length as 512

[Bwko]

100 seems to be the Gitea default, but we could change them to 255.

[plessbd]

My current use case is less than 100, so as long as I can use that I am fine. However, I would suggest setting the limit to urls to 2047 since that seems to be the maximum that search engines will crawl according to the SO article posted earlier

[tboerger]

Make sure that the db column is set to 255 and do the same here

[Bwko]

I've updated all website binding MaxSize to 255

[tboerger]

LGTM

[lunny]

Not changed the XORM struct?

[Bwko]

Default is 255? Since I can't find "VARCHAR(255)" anywhere in the code

[lunny]

Yes, default is 255.