Merge pull request #1 from jordandukart/master

Change so that a thumbnail is not searched for when the mimetype is audio.
Merge pull request #2 from jordandukart/master

Workaround to display the source datastream as opposed to the JP2 if the file size < 4kb
Merge pull request #3 from jordandukart/master

Updates to change adr_basic_viewer to use Tuque.
Merge pull request #4 from jordandukart/master

 Increased timeout time for AJAX requests for ext-js as loading objects with a lot of files would cause the request to timeout previously.
Merge pull request #5 from jordandukart/master

Commiting changes from REDMINE #3479.
Merge pull request #6 from nhart/master

no sorting on managed tab
Merge pull request #7 from nhart/master

aspect ratio for videos,  pdf viewer tests and their reverts, standard book view
store xacml object when determining which ds are viewable or downloadable