Change User#create method signature to return the newly created User.
Make all model tests extend a BaseModelTest class which cleans the database before each test run
Make UserTest pass
DB seed
Check bidirectional bindings for User-Invoices
Add model methods and bindings
Add datefields to test in index.scala.html
Add tests for Invoice model
Merge branch 'develop' of github.com:johanbrook/dat076-webapps into develop