added: notification on friend accept
removed: CSS because it's no longer needed
changed: layout and code cleanup
changed: README.txt to README.md
changed: styling of topbar icon (inspired by
https://github.com/minhtinh2604 PR #1)
updated manifest to Elgg 1.8.13
Merge branch 'master' of ssh://git@github.com/ColdTrick/friend_request.git