Topic statuses

We need to add topic statuses to help with some url bugs we found.

Suggest global statuses for now, with per board statuses coming in later versions.

Added topic statuses to settings area. Added as status groups, which allows more control.

Added topic status group selection to boards via admin interface and functions.

Now just need to implement selection of status on topics via both admin and clientarea.

From front end point of view topic status selection will be during creation. and when the topic author replies they will be allowed to change status. And of course moderators can change status at any time via admin, and replies on front end.

Added topic status selection to admin area for topics. now just need to add topic status selection to front end for both creation and adding replies for creator and moderator.

This has been added now across all areas.