-updated model to handle ratings storage
-udpated view to display current ratings (still testing)
-updated view to enable rating (underlying  functionality still to do)
Updated branch from master; Added view for checking another User; Fixed
displaying correct ratings
Tidied up controllers
Added links to User view from different subsites
Added functionality to handle rating; Resolved issues with adding
multiple ratings; Blocked possibility of User rating himself
Merge branch 'feature/ratings'