Allowed users to subscribe to a post to get inbox notifications of new top-level comments.
Changed new comment notification color scheme.
Removed userpages from wikifeed, removed deletions and repeats.
Working on allowing subscriptions to comments.
Reverting to just link subscription.
Removed old code.
Comment subscription in a workable state.  Needs more testing, but seems to be working.
Subscriptions for posts and comments working.  Added tooltips explaining subscription.
Fix user overview so that comments made in discussion are visible.
Merge branch 'subscription'
Merge branch 'fixdiscussionoverview'