Removed exsto's resources.
Removed clear nag
Printing polish for update check
Large backend change

FEL no longer caches data.  Everything is now done via callbacks.  Debug
printing is also much better.
Threaded sv_groups
Added ply:GetRankColor()
Modify plugin load to work with new fel changes.
Modified plugin metatable to work with fel changes
Colored debug support
Added COLOR.GREY
Title thread support
Time thread support
Restrictions thread support
Rank editor polish and thread support
Advert thread support
Administration thread support
Exsto now loads resources from workshop
Added hook priorities
Fixed #141