mediabrowser: initial code to implement it on the server side
mediabrowser: display inspector
mediabrowser: close inspector
mediabrowser: pagination
mediabrowser: add select possibility and fake save
mediabrowser: store selected images, while browsing and save full selection
mediabrowser: loading animation
mediabrowser: minor cleanup
mediabrowser: add full-text search field
mediabrowser: obj class selection
Merge remote-tracking branch 'infopark/develop' into feature/server-side-mediabrowser

* infopark/develop: (26 commits)
  update changelog
  improve structure widget css
  bugfix: example generators were not called in the integration task
  bugfix: there were even more editing related files in kickstart that needed to be moved to the editing generator
  move redactor.js into vendor/assets
  turn fixed navbar into normal navbar
  cleanup example module
  remove rails_connector runtime dependency for the kickstarter
  don't restrict rails version explicitly, it is restricted by the infopark_rails_connector
  Integrate new examples in the kickstart generator
  extract social sharing example generator
  extract profile page example
  extract language switch example
  extract contact page example
  blog: extract example into own generator
  extract column widget example
  extract video example into own generator
  extract slideshare examples
  extract slider examples
  extract person widget example
  ...
mediabrowser: minor cleanup
added possibility to edit a linklist on the widget edit view
mediabrowser: moves inspector into own class
mediabrowser: moves mediabrowser into own class
mediabrowser: implements uploader
mediabrowser: uploader make use of public api of RailsConnector only
refactor mediabrowser to use private methods with underscore
mediabrowser: splits views of media browser elements
mediabrowser: uploader can upload multiple files