Added Intents to MainActivity to start LoginActivity, then MapActivity.
Updated activity_map xml for map layout (without tabs), 
and added button label strings to strings xml
Fixed string values for map screen buttons
Commented out currently unused onClicks for map screen buttons in xml
Added map and location services code. fixed some problems. App should
now compile, run, and go to the map screen.
Merge branch 'master' of https://github.com/Odysseus-ScoutOut/scoutout-android