Added updateOrCreateFromFields method to SurveyRecordLogic.
The reading of the fields from the POST request will not happen in this Logic anymore.
Coverage: code coverage testing for Python
Coverage.py is a Python module that measures code coverage during test execution.
It uses the code analysis tools and tracing hooks provided in the Python standard
library to determine which lines are executable, and which have been executed.
For more information, see http://nedbatchelder.com/code/modules/coverage.html