Remove useless auto-generated comment
minor code cleaning
own logger for SensorObservationService
more (and better) logging
Improved app start log statement

- add os information
- switch to StringBuffer
add workaround for EPC instrument
Close some resource leaks
minor code cleaning
Set default mimetype of requests depending on binding to (text/xml|application/soap+xml) + UTF-8 using new MimetypeAwareRequestParameters
Add joda time as runtime dependency as it is required by the OX-F common module.
Reset lastTimestamp before processing new sample
Merge pull request #29 from EHJ-52n/develop

Merge with latest developments from EHJ-52n