general structure
Merge branch 'develop' into feature/widget-generator

* develop: (102 commits)
  implements the editing_auth callback
  creates a nice start page even if no homepage could be determined
  cleans up video widget
  simplifies login page
  removes user manager
  moves generator spec output to "tmp/generators" so it coexists with the test_app of the integration test
  finishes social sharing feature
  updates edit toggle
  bugfix: published workspace without title was not displayed correctly
  simplifies contact page component
  bugfix: person widget: handle case when no person is given
  removes widget examples so that only the structure is generated
  social sharing component refactoring
  provider support for the tracking component + added a tracking generator + changed the google analytics generator spec + changed wording in the maps generator
  bugfix: deploy task returned an 406 error
  loosens dependencies and updates gems
  google maps widget generator refactoring + removed not needed modules + hide the generator from the generators list (rails g)
  * remove the example migration from the spec * changed the path to the generator
  added provider support for the maps widget
  requires rest_client in case the rake task is called without an environment
  ...
adds widget generator

+ extends migration to check widgets directories as well for migrations
+ extends model api to allow to set the migration path
Merge branch 'feature/widget-generator' into develop

* feature/widget-generator:
  adds widget generator
  general structure