Added video thumbnail if thumb is null
New imgPlaceholder constant and added to the app scope.
New profile service method to fetch user groups and added service to resolve promise in routing.
Added profile service call to events routing and a content stub. Will be resolving a profile event service.
Replace navbar partial with naval back button partial in profile events view.
Added structure to profile groups view and ngRepeat loop to fetch groups scope.
Replace image else condition with image placeholder constant.
New SASS styling for videos and groups
Added title and groups scope for profile groups.