Merge pull request #34 from graimundo/master

[SERVDEV-49] - Replaced marketplace with new version
[CLEANUP] - Moved and renamed messages properties files to follow platform standard de facto
- Deleted temporary xml and xdd metadata info now moved into proper repository
[SERVDEV-49] - Category filter names now use xml category name when no translation is found (instead of translation ids)
[SERVDEV-49] - Updating dev stage filter on plugin refresh to improve on Firefox issues
- Deleted unused controller
[SERVDEV-49] - Readded incorrectly removed images that are used as screenshots for marketplace in the marketplace