core: removed root menus (i.e. global menu on top of window): root menus were not really useful as most actions doable there are doable through others widgets in Cagou. For actions without equivalent in widgets (like about screen), a new menu, more discreet, will be added soon. Kivy Garden's ContextMenu is not used anymore, so it has been removed from dependencies

include MANIFEST.in cagou/VERSION
global-include *.py
global-include *.ini
global-include *.po *.mo
global-include CHANGELOG COPYING* INSTALL README*
global-include *.sh
global-include Makefile *.rst *.bat
include android
include service
include bin
include doc
global-exclude *.un~