+ Contextual Action Bar
+ Read/Unread Status
+ Delete Feeds / Items
Merge remote-tracking branch 'origin/uebung2' into uebung2

Conflicts:
	RSSReader/src/at/technikumwien/android/rssreader/RssActivity.java
	RSSReader/src/at/technikumwien/android/rssreader/fragments/ShowFragment.java