Fix for # 101 SOS 1.0.0 GetObservation SOAP request
- Proble: SOS 1.0.0 GetObservation SOAP request fails because the contentType is set in the AbstractRequestOperator from the requested responseFormat if it is a MimeType.
- Solution: remove the contentType setting from responseFormat.
Merge pull request #102 from CarstenHollmann/fix/failing_SOAP_getObservation

Fix for # 101 SOS 1.0.0 GetObservation SOAP request