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
Make required changes for Oracle compatability on new oracle branch, new branch fixes rebase issues
Update capistrano files and migrations for deploying to Oracle servers
Delete 20141010105400_oracle.rb

Removed migration with duplicate name "Oracle"
Updated mailboxer opt-out table name to meet Oracle length requirements
Updated names to match Oracle length restriction
removed extra updates to Oracle
Make required changes for Oracle compatability on new oracle branch, new branch fixes rebase issues
Update capistrano files and migrations for deploying to Oracle servers
Delete 20141010105400_oracle.rb

Removed migration with duplicate name "Oracle"
removed extra updates to Oracle
Make required changes for Oracle compatability on new oracle branch, new branch fixes rebase issues
Update capistrano files and migrations for deploying to Oracle servers
Delete 20141010105400_oracle.rb

Removed migration with duplicate name "Oracle"
removed extra updates to Oracle
Make required changes for Oracle compatability on new oracle branch, new branch fixes rebase issues
Update capistrano files and migrations for deploying to Oracle servers