Adds button copy.
Adds 2 first cherry-picks
Adds cherry-pcik
Cherry-picks easier implementation
Removing one else if.
Cherry-pick removes redundant code
Cherry-pick minor changes
Some improvements.
Fixes wrong render in the admin interface
Merge pull request #272 from doleiynyk/2013-08-06_Copy_Products_Cherry_Pick

Enables copying of products in admin interface
Implements stock levels for list and detail view
Updates translation files and stock related string
Implements stock levels in demo application
Improves compatibility with other Javascript libraries
Fixes names (manager vs. controller)
Extends factories by inject method to allow mocking in unit tests
Merge pull request #273 from nsendetzky/2013-07-30_jobs

Extends factories by inject method to allow mocking in unit tests
Implements cron job controller infrastructure and admin job controller
Merge pull request #274 from nsendetzky/2013-07-30_jobs

Implements cron job controller infrastructure and admin job controller
Adds abstract class for plugin providers