- Added action bar icons for settings and new IOU.
- Moved new IOU button to action bar.
- Created Sort By dropdown in actionbar.
Merge branch 'master' of github.com:ranokmai/wmm

Conflicts:
	res/layout/fragment_main.xml
	src/com/example/wmm/IouListFragment.java
	src/com/example/wmm/NewIouActivity.java