Feature/62 resolve sendClassification & senderProfile in triggeredSend, emailSend and journey

[JoernBerkefeld]

PR details

What changes did you make? (Give an overview)

• closes #62

Further details (optional)

todo: add proper tests for the 3 journey types (transactional, quicksend, multi-step)

Checklist

• [ ] I have performed a self-review of my own code
• [ ] I have commented my code, particularly in hard-to-understand areas
• [ ] test scripts updated
• [ ] Wiki updated (if applicable)