Added an RISCreator class and attempted to add a button on the index default html which will provide the RIS export

Signed-off-by: Joe Fennimore <jrf118@case.edu>
Update image download links to JPEG and add links for JP2/TIFF downloads
Merge pull request #259 from KelvinSmithLibrary/file-downloads

Update image download links to JPEG and add links for JP2/TIFF downloads
Added Pry-Rescue gem for testing and added tests for linking external sources.
Merge pull request #261 from KelvinSmithLibrary/test_external_links

External Links Test
Update facet from Work to Item
update wording for original file download
Source field links open in new tab
Fix failing test for source links
Add oracle dependencies for Travis-CI
Add link to download PDF version of TEI, creates link for #256
add files and configuration from oracle branch
Update to correct branch name
Update deploy scripts to use master branch
Merge pull request #262 from KelvinSmithLibrary/merge-oracle

Merge oracle branch into master
Fix issue with variable scope. This was causing a no method error for source field when loading related files
Update Gem versions
Updated specs for #ignore deprecation, updated to #transient
Creates a title_sort_ssi index that is created for each item in fedora to order on title and creates an A-Z order option. Fixes #252
The new RIS citation writer officially matches the functionality of the last RIS citation writer.
When the Export RIS button is pressed, a text file with a .ris extension is sent to the browser and downloaded.

The ris creator is in the models directory.  An instance of the creator is created in the catalog controller, and the method in the controller which does is called in the _index_default.html.erb

Signed-off-by: Joe Fennimore <jrf118@case.edu>