Update schema
Add pretender and update dependencies
Fix landing page test
Delete obsolete static pages test
Ember is set up to retrieve activites from rails
Add activity controller/serializer

We added a provider column to the activites table to get around the
problem of serializing a model that uses STI.  Not necessarily long
term, but ember and rails are wired correctly and the front end can
receive a json array of activity objects.
Fix permissions for youtube
Urls are dynamically plugged in to activities template
Update youtube_api_worker to use embed urls; fix tests
Activities index now has soundcloud dynamically loaded
Update activities table to take full soundcloud embed url
Merge remote-tracking branch 'upstream/master'
Merge branch 'master' into ember-youtube
Soundcloud user id now saved in users table

This is how we'll make the external API requests to soundcloud for a
user.
Add soundcloud api worker
Add redis dump to gitignore
Soundcloud activity is created on login
Merge pull request #19 from wfro/ember-youtube

Ember youtube