Revert "Removing feedback and register stuff from bsocial-comments."

This reverts commit 0f6c8ec0b9543381437a38460b46ca472233c5d3.
Handle un-flagging
Re-adding README info for feedback
Don't make bsocial-comments reliant on our HTML structure
Re-order the management links
Merge pull request #13 from borkweb/feedback-faves-and-flags

Feedback faves and flags