Merge branch 'release/20140626-release' into develop

* release/20140626-release:
  bump version to 2.0.4
update editing_auth callback to return Scrivito::User
add kickstart generator spec
integrate coveralls and update travis configuration
update welcome page
add bootswatch theme selector
bugfix: env variables are now also inserted to test and production env
bundler: use gem_tasks
google maps widget: remove unused embed_url
revert user authorization
use Scrivito::ObjClass
bugfix: wrong obj class name
resource browser: it is now possible to extend the resource browser filters
turn linklist into link attributes, where only one link is used
update coverage status badge
update to ruby 2.1.2

* cleanup dummy spec app
* update readme
* cleanup travis task
add styling for link fields on details view
bump version to 2.0.5
Merge branch 'release/20140804-release'

* release/20140804-release:
  bump version to 2.0.5
  add styling for link fields on details view
  update to ruby 2.1.2
  update coverage status badge
  turn linklist into link attributes, where only one link is used
  resource browser: it is now possible to extend the resource browser filters
  bugfix: wrong obj class name
  use Scrivito::ObjClass
  revert user authorization
  google maps widget: remove unused embed_url
  bundler: use gem_tasks
  bugfix: env variables are now also inserted to test and production env
  add bootswatch theme selector
  update welcome page
  integrate coveralls and update travis configuration
  add kickstart generator spec
  update editing_auth callback to return Scrivito::User