Remove public/assets from git and add to .gitignore
First 2 exercises of ch. 9
Test to check Profile, Settings, etc links don't appear when not signed in
Use sign_in test helper when possible
Refactor into a partial
Test for signed in users to not be able to visit signup or submit to create action
Get tests to pass
Work on #6, Ch. 9 exercises
Forbid admin users from deleting themselves
Merge branch 'exercises-ch-9'

No idea what to put where (or why it sometimes pops up)