SOS om2: Start refactoring on om2 database structure
SOS OM2 refactor: work on getObservationById
SOS: continue refactoring of om2 measure table
SOS: add test data to test measurement getObservation
SOS OM2: work on measurement result model
SOS: add test + fix for om2 GetFeatureOfInterestTime
OM2: fix for getDecimatedResult
SOS: add a profile test case
SOS: work on om2 profile decimation
SOS OM2: fix for postgres db + handle null value in decimated result
SOS: fix in test