Began adding Parse backend.
Added saving/retrieval of commits from Parse.
Merge branch 'feature/parse-persistency' into develop

Conflicts:
	application.js
Fixed issue with user's GitHub link, removed unnecessary console logging.
Added a favicon.ico file.
Updated the hardcoded authorization URL in main.js for now so that the user is directed to authorize with the production version of Syrio on GitHub, and subsequently redirected to the callback located at syrio-app.herokuapp.com. This may need to be changed later on though, so that the client_id query string is set dynamically.
Server now returns {} when a user has no files which could be analyzed. Removed jsmeter's logging.
Fixed issue with users that have no files and added reasonable metric averages
Merge branch 'develop'

Conflicts:
	application.js