Update README for `AbaLookup` module
Remove Lookup services config from AbaLookup module
Refactor AbaLookup controllers
Update db schema user/account relationship, nullable fields

Update the database schema:

- A user now has a reference to an account
- Update nullable fields
Fix session methods
Replace explicit type check with type equals
Useless comments are useless
Add explicit NULL checks
Style fix use statements
Remove HTML minify event
Add ContentSecurityPolicy header
Add Rhumsaa\Uuid to the project
Add watch task for PHPUnit

e.g.

    MODULE=Lookup grunt watch:phpunit
Set rw permissions on the db for everyone
Add test data
Add city to registration form
Add Lookup module README file
Add Lookup entities
Add Lookup database classes
Add API classes for Lookup module