Michal & Sam: Upgrade behave from 1.2.2 to 1.2.3 to get around 'ScenarioOutline' stdout bug[1]. Fix feature tests and introduce features for end date.

[1]: https://github.com/behave/behave/issues/63
Merge pull request #45 from InsolvencyService/fix-feature-tests

Michal & Sam: Upgrade behave from 1.2.2 to 1.2.3 to get around 'Scenario...