us72 
- Implemented functionality
- Integrated functionality in UI
- Provided test case
Merge remote-tracking branch 'origin/s05-us72' into dev

Conflicts:
	src/com/yinyang/so/activities/SearchResultActivity.java
	src/com/yinyang/so/database/DatabaseAdapter.java
	src/com/yinyang/so/databaseentities/Post.java