Fix bug in sorting projects by name #41
add ability for users to view their own profiles #42
Moved patch to Mime::Type into an initialiser.
Sort permission list by user name.
Change list of audio recordings on site page.

 - remove exists column. Closes #45
 - add start date and time. Closes #25
 - added duration
Improvements to dataset and dataset creator #33

 - Now has queries specific to postgres #26
Updated gems.