Add automated testing to hera

[Pacmens]

Currently, we have to do all tests by hand. This was fine at first, as it didn't really take that long to manually test our increments.

Since then the project has grown a lot, both in complexity and size. If this continues at a similar pace, it will only get progressively harder to test all our current features.

While it will be a rather big investment to go back and integrate this into all our existing code, this will SURELY will be worth it in the future, and with the current cleanup of all code, this is the perfect opportunity to do so.

• Make JUnit Testing Structure #258 JUnit Structure
• Make JUnit tests #259 JUnit tests
• Integration Test Setup #260 Integral Structure
• Define Storyline Integration Tests #261 Integral Test Design
• Write Integration Tests #262 Integral Test Implementation