Add addfriend functionality
Add titles to various activities and create constant labels in a class to hold string names for activities
Set Edit Friends as child of FriendsListActivity
Set functionality to take user to main app when done with add/removing friends
Add checkmarks to users
Set functionality for adding and removing friends using checkmarks and unchecking
Added user add/remove functionality
Merge branch 'master' of https://github.com/LarryAsanteBoateng/Holler