Closed #40 added bug report page

Added bug report
Closed #37 Closed #38

Removed the dual Ajax calls, moved them into one and added some business
logic in the view. This removes the race condition on the model.

Reworked UnlockRequested view and created related asynchronous task.
Now calls Celery Task unlock_eligible_vocab_from_level which polls the
API, and creates a UserSpecific ONLY for items that are unlocked in
WaniKani. Any items that are unlocked at a future date get added during
the daily user update.