That being, user - subscribes to -> users, rather than
user - has subscribers -> users

Mainly useful for user export.

`approve_friend_request`, and `deny_friend_request` actions.
Add follow_request_count to the user view.

This was a dirty regex replace which worked on my server

This reverts merge request !733

```
# Only return statuses that have been pinned
GET /api/statuses/user_timeline.json?pinned=true

# Pin
POST /api/statuses/pin/:id

# Unpin
POST /api/statuses/unpin/:id
```

Added tests for `confirm_email` action.