[Language] update de.po
[Button setup] Add option to move hotkey functions once selected

Currently you could only remove them. Now with the < > buttons you also
capable to move them once they were selected
[servicedvb] simplify audio cache selection in selectAudioStream
[Satfinder] add DVB-C and DVB-T
[TuneTest] ddd cable tuning options
[ScanSetup] add predefined cable transponder scans. Make terrestrial region selectable from Manual Scan. Fix incorrectly named variable in addCabTransponder.
[PiP setup] finer movement of PiP screen
Merge remote-tracking branch 'upstream/beta' into beta