Added php files

-Corrections to Register account to show error messages
-Added get_friends_firstlast.php to return first last of all current
friends of specified email address.
Updated Current Friends Activity.java

Current Friends page now displays first and last name instead of email.
Current Friends updated

Now shows a message on current friends page if user does not have any
friends. "you don't have any friends yet."
Merge pull request #10 from Mobliz640/master

Added php files