comment cleanup
moved InstalledApps list into a Fragment
cleaned up MainActivity.java
cleaned up InstalledAppsFragment.java
set TestTabbedActivity to MAIN activity for testing
import support.v4.app.Fragment instead of app.Fragment
added RemoteAppsFragment
added TestTabbedActivity
added SlidingTabLayout and SlidingTabStrip
DummyContent (will remove later)
removed all padding for now
updated SlidingTabLayout and SlidingTabStrip to I/O 2014 version
set tabs to fill the screen width
changed first tab title to "Installed Apps" and disabled distributeEvenly for now because it messes up if the tab titles are too long