Add Data Providers
Add test for ajax.fetch
Remove modelName arg from data-provider get() methods
Add test for metadata data-provider
Add test for stylesheet data-provider
Add test for page-img data-provider and fix issue with request abortion
Fix a bug where pageload messages were fired too many times
Fix a missing stub in viewer-test
Add ability to override default data providers
Use util.parseJSON instead of $.parseJSON
Merge pull request #57 from box/data-providers-t2

Add data providers