fix mouse exit on browserbox.
Add missing consts into item.
Improve theme usage.

Removed instance method.
Remove some useless static methods from theme.
fix profiler labels.
Improve basiccontainer.
improve widget.
Exclude useless logic methods calls.
Fix typo (usefull -> useful)
Improve logic handling speed in gui.
Fix memory leak on window resize.
fix about button moving on window resize.
fix compilation with some compilers.
Fix unit tests compilation.
Add /gm chat command.

It send message to all online gms.
Fix widgets list corruption.
Fox compilation with fuzzer.
fix compilation warning.
Improve cliprect.
Improve color.