Out of window-bug

[pietervdvn]

During oSoC, a few routes turned up where the crows-flight or walking departed before the requested start date. Sadly, no such routes were logged

• [x] Reproduce issue - e.g. by adding a check for this in the integration tests
• [ ] Figure out where these journeys should be filtered

[pietervdvn]

There is a unit test reproducing the issue: 'ProfiledConnecionScanTest': 'OutOfWindowTest'