GUI chat sans whisp
clean dicemenu
edit map background -> new map created instead
edit map background -> new map created instead (fix)
resize subwindow for bg size > mdiarea size
fix edit map cancel
fix whisp to self
Merge branch 'mapImageResize'

Conflicts:
	src/mainwindow.h
fix: tile numbers for different image sizes
negative rolls + fix dice gui
Chat Widget + clean includes
fix missing connect for edited subwindow
ChatClient clean
doc chat
Merge branch 'master' into ChatWidget

Conflicts:
	src/chat/chatclient.h
	src/chat/chatserver.h
	src/mainwindow.cpp
rename chat files and classes (CamelCase)
rename classes (CamelCase)
connexion helper, work in progress
french doxygen
added a validator