[10413] Add some missing class/struct forward declarations and includes.

[newsbot]

<pre>m src/game/ArenaTeam.cpp
m src/game/ArenaTeam.h
m src/game/Chat.cpp
m src/game/Chat.h
m src/game/Group.h
m src/shared/revision_nr.h
</pre>
<pre style='white-space:pre-wrap;width:81ex'>[10413] Add some missing class/struct forward declarations and includes.

Signed-off-by: VladimirMangos <vladimir@getmangos.com></pre>




Дальше... (http://github.com/mangos/mangos/commit/9eb3b0cf00021d98951cc3767437c88e66307aef)