Refactored PUT requests to use promises to ensure the correct, updated model is sent back
Refactored new user function to send back user object without password
Refactored get user to not send back password, salt and signature
Refactored create pet to send back pet object instead of just petid
Refactored get requests to return requests by pet instead of by user
Excluded salt from POST new user response
Merge pull request #70 from emiidee/feat/serverRoutes

Refactored user routes part 1 of 2