Users can login and change password via invitation email

Disabled by invalidating GMail SMTP password.
To restore functionality: 
  1) Open server/api/user/user.controller.js
  2) In web browser, go to https://security.google.com/settings/security/apppasswords
  3) Create an application specific password to use for this app's outgoing mail server
  4) Copy username and password from step 3 into user.controller.js lines 17 and 18 respectively
  5) Save, and your server will now send invitation emails

User flow:
√ Admin adds users
	√ App creates new users and marks as inactive
	√ App sends new users invitations (with login url)

√ App displays pending invitations in admin panel per group

√ New user logs in for the first time
	√ New user is asked to change their password
	New user is asked to fill out their information (Need to do this)
	√ App removes user from invitation status list by marking them as active