Merge pull request #1202 from Arantor/release-2.1

! Fixed avatar resizing being off by one. Also fixed uploaded avatars no...
Merge pull request #1205 from Arantor/release-2.1

HTML5 stuff
Merge pull request #1206 from Arantor/release-2.1

Various minor stuff.
Merge pull request #1208 from Arantor/release-2.1

! There's a few issues with the warn page if you happen to be a keyboard...
Merge pull request #1209 from Arantor/release-2.1

HTML5 stuff
Merge pull request #1210 from Arantor/release-2.1

Clean up, an unused feature removal and a bug fix with optimisations on top