updated style to json loader
cleaning up dataset references
fixing migrations for initial mysql database
Merge pull request #28 from LibraryOfCongress/feature/json-loader-restyle

updated style to json loader - thank you ;)
add exhibit transaction result field
added an intermediary page to the load to check the status of the transaction before redirecting to the builder
separate json status endpoint, always go to status page rather than directly redirecting on success or failure
3 second client polling interval
Merge pull request #29 from LibraryOfCongress/feature/asynch_loading_page

Add a page to check the status of upload transactions
Create PropertyCollection model for updated DraftExhibit API.
Refactor Property model for updated DraftExhibit API.
PropertyCollection loading depends on profileURL to create Properties. A Property model will be responsible for loading it's own items (data).
Modify dataset editor PropertyModel for updated Exhibit API.
Begin changing dataset editor view from the top, editor-view, down for the upcoming DraftExhibit API.
Refactor EditorView for upcoming DraftExhibit API.
Refactor PropertyView for upcoming DraftExhibit API.
Begin to refactor AugmentModalView for upcoming DraftExhibit API. Add ViewInterface which is a singleton passed between views that need to communicate with each other through an Observer pattern.
Add ViewInterface file. Change to four spaces to mimic existing code.
Modify PropertyCollectionModel loadData to store PropertyModels correctly and sort properties by label.
PropertyCollection adds CompositePropertyModels to properties list. Strip Freemix code from CompositePropertyModel.