adding oembed to badges and feedback tab on courses
Merge pull request #220 from svoigt/master

Fix template rendering error on school edit pages.
Fixed two typos
Merge branch 'master' of github.com:p2pu/lernanta
adding oembed to badges and feedback tab on courses
adding oembed to badges and feedback tab on courses
Allow trusted users to export a list of email addresses for course signups
removing redundant model
removed redundant method
changed error message on oembed badge
adding additional setting for embedding of badges
changing requirements to point embedly to previous version
omitting user in calling the embed function
removing form input on error
removing commented content
adding image for badges tab in courses content
Merge pull request #221 from ercchy/master

Integrate badges from badges.p2pu.org with courses
merged conflicts
Add support to clone content and courses.
Show course clone button for oranizers