Add sanity checks for swapPiP and movePip regards to Hotkey
Hotkey: avoid plugins could be called twice
Hotkey: Change description of Sleeptimer to add Edit to it.
Merge branch 'master' of git://git.code.sf.net/p/openpli/enigma2 into 4.2-development
Merge branch '4.2-development' into 4.2-devtest