Update user-management (admin back-end)
Fix models Role bug
Merge pull request #5 from AKWEXV/admin-user-management

Update update-ui from user-management (admin back-end)
Merge pull request #6 from AKWEXV/master

Update vote service.
Update vote page, and timer management.
Add ranking ui and services
Merge branch 'admin-user-management'

Conflicts:
	exceedvote/app/controllers/Vote.java
	exceedvote/conf/routes
Bug fixes
Merge pull request #7 from AKWEXV/update-ui

Update ui, back-end, ranking and voting