Refs #4160. Added colorbox 1.3.19  as vendor.
Fixes #4160. Replaces FancyBox by ColorBox.
Refs #4160. Removed FancyBox.
Refs #4160. Internationalize colorbox.
Make the messages_count_unread() general

Can we extend this function so that the unread messages of any user can be returned without duplicating this function again? Useful when using webservices.
Style cleanup
Merge pull request #1 from mrclay/pr-413

Style cleanup
added more generic words
use a _ to seperate words in language keys
Revert "use a _ to seperate words in language keys"

This reverts commit 4bed64d2d88fcd79c6298ab5622af67d0367c3ec.
use _ to seperate words
Corrects encoding and other small tweaks in Twitter widget
Style fixes to match 1.8 widgets
Fixes #4990 removes extra title for full file view
Fixes #4982 adds confirm dialog to profile field reset
Fixes #4983 added default paramter to get_input() to avoid warning
updated copyright date
standardise on American spelling of licence
Fixes #4991 CLI allowed when walled garden is turned on
addresses pull request 472 - group not having an owner is a serious problem - try exception approach - maybe we need a mechanism for displaying an error page besides exceptions