Anshu - Take-home assignment w/ mailgun_logger

[ogranesson]

Task 1:

• Add member role with access to only the events page
• Block Stats, Accounts, Users pages from the interface as well as through routes
• Allow members to update their own profile

Task 2:

• Add multiple-option select in create and edit user page for roles
• Self-downgrade and upgrade blocked - admins can neither give themselves superuser nor demote themselves to memver
• Tests for this task (skipped)

Bugs:

• Error flashes don't show up when an admin tries to downgrade themselves.