hotkey- added long help button

Signed-off-by: littlesat <littlesat99@yahoo.com>
Hotkey: Try so solve selecting incorrect plugin function

In case plugins have more functions in different cathegories
Hotkey: Just a cosmetics. Correct a place of a comma
Hotkey: Add check for selected event parameter in EPG plugin

Thanks IMS for reporting as I forgot this check in my previous commit.
Merge branch 'master' of git://git.code.sf.net/p/openpli/enigma2