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
Adds abstract class for plugin providers
Fixes coding style and removes debug output
Merge branch 'master' of https://github.com/Arcavias/arcavias-core into 2013-08-13RefactorPluginsAddAbstractClass
Fixes minor issues in plugins
Merge pull request #275 from dahoffmann/2013-08-13RefactorPluginsAddAbstractClass

Adds abstract class for plugin providers
Improves design of stock levels in list and detail view
Merge pull request #276 from nsendetzky/master

Implements stock levels for list and detail view
Implements service provider decorator for checking previous orders of customers
Extends OrderCheck decorator to check for unpaid orders within the configured number of days
Fixes problem with injecting a default manager
Use only stable tests and fixes problem with context cloning
Merge pull request #277 from nsendetzky/master

Implements service provider decorator for checking previous orders of customers
Nest all type tabs under a tab named "Types"
Merge pull request #279 from cookiekiller/implement_nested_tab_view

Nests all type tabs under a tab named "Types"
Fixes coding style
Merge pull request #280 from nsendetzky/master

Fixes coding style