Username in top bar

Authorization also now preferentially selects RIT Gmail accounts,
instead of simply auto-authorizing the user's primary account.

Fixes #33
Handle OAuth2 getuserinfo failure
Merge pull request #39 from RITHonorsTechCommittee/issue-33-show-email

Username in top bar

Fixes #33
v0.9.1
Merge branch 'master' into issue-36-disabled-buttons

Conflicts:
	dist/js/app.min.js
v0.9.2