Fix artist info term and definition
Hide text overflow in artist album titles
Update gems
Delete unused roster controller
Unnest albums and editions to simplify routing
Update to rails 4.1.0.rc1
Explicitly render application layout in pages#home
Update gems
Workaround not being able to use  as an enum value
Link to edition from artist page
Sort albums by artist name and album name
Fix accessing contribution kinds

Enums were moved to a `DEFINED_ENUMS` constant in Rails 4.1.0.rc1.
Stub song resource
Set default enum values in schema
Stub link to add a new edition to an album
Allow edition siblings to be loaded asynchronously
Highlight days with releases on calendar
Add a simple, ActiveRecord-like enum implementation

`ActiveRecord::Enum` does not allow enum value names to match methods
that have already been defined. This simple implementation acts
similarly to ActiveRecord's but does not define all the helper methods.
Show original name on album page
Use Ember comparison helpers