style adjustments made while failing to solve real problem
remove console.log
working delete for sources and styles
move del function to libjs
refine delete code + error reporting
cleanup
resolve conflict
fix hover state on data
Merge branch 'master' into delete
remove console.log:
Use js-ref-delete for both
Wrap everything in an Editor test, stub some stuff and save a project
Comment todo
Use trash icon for elements that removed from the app
Merge branch 'master' into delete

Conflicts:
	templates/sourceitem._
Merge pull request #196 from mapbox/delete

Delete