- plugins: type for listed plugins on blue key is selectable

* add mainmenu items for tools and lua-extensions
  (default not visible)
* add usermenu items for tools and lua-extensions
  (default off)
Merge remote-tracking branch 'cool-next-cc/next-cc'

Conflicts:
	data/locale/deutsch.locale
	data/locale/english.locale
	src/gui/user_menue_setup.cpp
	src/neutrino_menue.cpp
	src/system/settings.h