Adds site specific language combo box item
Trying to merge 2 stores
Actual code
Removes unused renderer method and adds optional filter for locale language controller
Merge https://github.com/Arcavias/arcavias-core into 2013-11-07_languages_only_from_site
Removes not used entry
Restores removed renderer
Fixes case if no language is available
Fixes coding style
Merge pull request #340 from doleiynyk/2013-11-07_languages_only_from_site

Adds option to restrict language selection in admin interface only to the configured ones in the locales