Fixed loading of language categories
Merge branch 'master' of github.com:WoltLab/WCF
Improved behavior of suggestions
Merge branch 'master' of github.com:WoltLab/WCF
Added option to show loading overlay for a single request
UserAuthenticationFactory is now a SingletonFactory
Removed pointless newline
Added IPv6 support for Memcached

Fixes #1140
Added support for braindead IPv6 notation
Fixed authentication
Fixed authentication