Documentation|Console: Removed obsolete vars/cmds, added 'taskbar' cmd
Client|Cleanup: Removed old cruft from the Control Panel

A bunch of the settings in the Control Panel's Network and Console
pages are now obsolete. Also dropped server-only settings and deleted
some ancient global variables that are no longer in use.
Fixed|Ring Zero: Suppressed a couple of unnecessary warnings

There is no need to show warnings about game plugin help strings and
patch loading failures when no game is loaded.