Went over gs-entbase/server and made sure to use the new Think handlers to safely deal with MOVETYPE_PUSH
and handle any fun edge cases where time may be 0.0f.
func_breakable has also been fixed, since the changed Show/Hide behaviour prevented
them from getting destroyed fully.
multi_manager entities now behave correctly when calling themselves in MULTITHREADED mode.
Remove GS_RENDERFX option. Too many entities rely on its functionality anyway.
Fixed some rendermode behaviour - ladders will no longer be visible.
You can now see the playermodel (and no longer the viewmodel) in mirrors.
Fixed a lot of warnings.