Specify beta versions of ember and ember-data
Change the data store adapter to `-active-model`

`_ams` is deprecated in ember-data 1.0.0.beta.6.
Link to edition edit page
Include nameable mixin in ember track model
Add a monthly calendar to calendar page
Add links to page through months on calendar
Add artists who have a birthday in a given month on the calendar
Remove unused server-side templates
Show artist age in birthday list
Add monthly releases to calendar
Add disambiguation to edition templates
JavaScript cleanup

  * add missing semicolons
  * use shorthand namespace `Em` instead of `Ember`
  * use computed properties instead of automatic bindings
  * use strict equality (`===`)
Switch css grid to susy
Clear artist and edition info