Introduce Hotkey as embeded alternative for MQB

Some functions are not included yet so there is still some work to do, but
the community could help here to complete it ;)
Remove unrequired spaces in keymap.xml
Hotkey: remove white spaces

Sorry that I missed those...
Merge branch 'master' of git://git.code.sf.net/p/openpli/enigma2 into 4.2-development

Resolved Conflicts:
	data/keymap.xml
	data/menu.xml
	lib/python/Screens/InfoBar.py