Fix NPE, as shuffleButton and repeatButton are only non-null when full height.
Merge remote-tracking branch 'upstream/actionbar' into actionbar

ts:
	res/values/strings.xml
	src/uk/org/ngo/squeezer/framework/SqueezerBaseActivity.java
- Renamed labels *CONTEXTMENU* to look like the server strings
- Removed _CONTEXTMENU_ from other labels to keep them unified
- replaced items playable_yem_action* with the renamed ones above
- Added german translation