Simplify config selection choicebox feature

With less changes compared to the orriginal code as it was before
Update config screen when selection changed by config choicebox
ScanSetup: Make a difference in the descriptions of MultiSat

Previous there were two Multisat description. Change the by default all
are selected to MultiSat all select.
TimerEntry: Update screen when change made by choicebox
ScanSetup: Reassing OK button to start the scan
accel
Merge branch 'master' of git://git.code.sf.net/p/openpli/enigma2