added edit view for video-, person- and maps-widget
added edit backside generator
merged develop
Merge branch 'develop' into feature/widget-backside

* develop:
  update infopark gems
  bugfix: remove additional whitespace
  update changelog
  bugfix: only create entry in en.obj_classes.yml file for pages
  pull request review
  added example migration to all widgets
  remove controller class from body html tag
  add sublime project files to gitignore
  added examples to image-, maps- and text-widget
  bugfix: redirect_link? is not defined anymore
  show some respect for the reporter
  rename HeroUnitWidget to TeaserWidget
  rename blog entry to blog post
  bugfix: missing bundle after changing Gemfile
  fixed specs for the changed widgets
  added headline widget and removed headline from the following widgets to get an more modular widget base   * image widget   * text widget   * google maps widget   * slideshare widget   * video widget
widget edit view pull request review

+ add changelog entry
+ use plain javascript not coffeescript
+ consistent naming "editing"
+ extend widget generator specs to check edit content
+ remove "to_key" from obj as it is not longer needed in edit view
+ bugfix: widget api_generator needs the actions module
Merge branch 'feature/widget-backside' into develop

* feature/widget-backside:
  widget edit view pull request review
  added edit backside generator
  added edit view for video-, person- and maps-widget
bugfix: remove teaser thumbnail, that gets generated automatically
bugfix: developer bar: don't display obj class information on non cms page