de.po: Update German Translations

Signed-off-by: Littlesat <littlesat99@yahoo.com>
scan both DVB-T/T2 when 'system' is not specified in terrestrial.xml
Merge branch 'master' of git://git.code.sf.net/p/openpli/enigma2 into BETA

Resolved Conflicts:
	po/de.po