fixed minor bugs
fixed home feed algorithm (should work even in poor internet conditions now)
stalker update for contacts + fb people
added backend to fetch facebook friends/contacts by name, when prompted
added facebook default username
added constraints to notifications, fixed up a bit
friends now buffered and loaded by username only
repetitive friends are now not loaded
no repetitious loading for imageposts as well
add as follower/following already buttons for notification text boxes
attributed some files to their correct owner
Merge remote-tracking branch 'origin/eric' into bala

Conflicts:
	ParseStarterProject/ServerInteractor.swift