Implemented new API and improved performance
clean up photo detail view implementation
* get specific photo in photo detail view pager
* show current photo in photo overview on pressing back in detail view
Merge remote-tracking branch 'noelle/master'

Conflicts:
	src/RoyalArchiveOnAndroid/src/main/java/ch/royalarchive/androidclient/photo/PagerActivity.java
	src/RoyalArchiveOnAndroid/src/main/java/ch/royalarchive/androidclient/photo/PhotoDetailviewActivity.java
	src/RoyalArchiveOnAndroid/src/main/java/ch/royalarchive/androidclient/photo/PhotoOverviewActivity.java
Improved performance on scrolling fast
increased memory
get selected photo in photo detail view pager also on rotate device
Merge remote-tracking branch 'noelle/master'
Implemented enable of offline synchronization
@T57: scale raw photo to needed size
Refactor: rename OverviewBinder to PhotoBinder
Clean up: remove unused code (GalleryActivity)
@T57: improve photo detail size scaling
@T57: improve photo detail size scaling
Merge remote-tracking branch 'noelle/master'

Conflicts:
	src/RoyalArchiveOnAndroid/src/main/java/ch/royalarchive/androidclient/OverviewBinder.java
Integrated Thread-Pool
Video-Thumbnails hinzugefügt