add redis dependency, and try and workaround broken ubuntu elasticsearch config
add some gem/bundler love to travis build, since it seems to timeout quite a bit trying to install dependencies
Changed the displayed image to the most recently uploaded image for the item
Added a form for images to the collections form
Started adding the image handling logic
Changed the api response to respond with the new polymorhpic data
Changed the relationship between items, collections, and image_files to be polymorphic
Started hardcoding the items since the new relationship seems to make this model unable to find the current item
Added references for the new polymorphic relationship
Added a belongs_to relationship for the items and collections
Added a child node to the collection object to access the image_files
Added all the dependencies for the ItemFormCtrl to the CollectionFormCtrl for initial development
Added a token column to the collections table to allow images to upload in relation to collections
Added the token methods to collection
Added a token column to collections
Added routes for image_files resources within collections
Fixed indentation for the image fields
Added a collection image to the collection show page
Added dependencies to the collections model for images and added the corresponding prototype methods
Changed property names to be more consistent with how images are attached to items