Add flash to app layout
Add .env file for test env
Add User model and controller
Get first statement and user creation working
Add specs for StatementsController#create
Track unfinished user in session

* Use unfinished user in form if available
Load unfinished user automatically
Add statement validation
Show existing statements on new statement form

* Make it so User has many Statements
Merge pull request #2 from jakeboxer/save-statements

Save statements to unfinished user