Bug: filtering by property does not work

[DLade]

Filtering a Thing by a property results in BadRequest.

eg.
http://scratchpad.sensorup.com/OGCSensorThings/v1.0/Things?$filter=properties/hello%20eq%20%27world%27 or
http://scratchpad.sensorup.com/OGCSensorThings/v1.0/Things?$filter=properties%2Fhello%20eq%20%27world%27

{
  "errorId": "f4a4818f-f4e4-46c9-abe1-fbde97b893f9",
  "code": "BAD_REQUEST",
  "message": "Invalid query. Invalid property.",
  "stclass": "com.sensorup.iot.model.ErrorResponse",
  "baseURL": "http://scratchpad.sensorup.com/OGCSensorThings/v1.0"
}

note:
At FROST server this query works without any problems.

[derkod]

Maybe you have the same problem as I had some months ago. See #176