Add UI for users to change passwords
Add server route for user updating, and a test for it

Also some other enhancements in the user test
User profile edit page
Send emails when a user is invited to join a group
Merge remote-tracking branch 'origin/master' into group-invite-emails

Conflicts:
	clients/web/src/views/body/UserSettingsView.js
Merge pull request #150 from girder/group-invite-emails

Group invite emails