Refactor MyRiskCtrl to retrieve user_id
Merge branch 'master' of https://github.com/germTheory/germTheoryWebApp into mobile/myrisk

Conflicts:
	mobile/www/js/controllers/common.js
	mobile/www/js/services/settings.js
Show more descriptive error message when login fails
Merge pull request #302 from ryojiosawa/mobile/myrisk

Store user_id into browser's localstorage when signup/login succeeds