Hotkey: Add preview of functions in hotkey selection screen
NimManager: corrigate LOC frequencies for circular polarization LNBs

Remark: Create a separate LNB type is a better idea to add this feature
hotkey: Add software update as hotkey function
Hotkey: Add Latest Commits as hotkey function
Merge branch 'master' of git://git.code.sf.net/p/openpli/enigma2 into 4.2-development

Resolved Conflicts:
	lib/python/Screens/Hotkey.py