Added resque gem, modified MediaController to use it.
add audio recording min duration and validation for settings file
added exact duration to list of audio on sites#show
notes should store other audio recording uuid
updated gems
updated settings for resque.enqueue
updated baw-workers
fix media API changes
Added website status page and some layout fixes.

Fixed titles hiding under navbar at some widths.
Added recent annotations to user page.
removed file existence check on site#show page.
Added HTTP header 'Vary: Accept' for html and json requests #81
added total audio_recording file size to website status page
added indexes to audio_recording table for website status page
updated gems
added titles
Refactor of RangeRequest and added tests

Range request is now created when the application starts and re-used between requests.
It has tests now!
The spec and implementations for Range requests are rather variable, so there may be some bugs.
fix ETag in spec
redis connection, updated capfile, added 'original_sample_rate' to media API
Fix media response headers. Closes #80
user list and website status page changes
Added exceptions_app so errors return content based on the Accept header.