CID Superfecta Who-Called UK plugin doesn't handle "Average: Negative" response

The Who-Called UK module (WhoCalled_UK.module) doesn't handle a "Negative" average response from the website.

Plugin code is here: https://git.freepbx.org/projects/FREEPBX/repos/superfecta/browse/sources/source-WhoCalled_UK.module

The plugin contains a code block around line 87 which parses these responses:

			switch (strtolower($average_rate)) {
				case "dangerous":
					if($number_of_searches <= $run_param['Search_Number_Threshold'] || $number_of_comments <= $run_param['Comment_Number_Threshold']) {
						$this->DebugPrint("Number flagged as Dangerous, but comment/search threshold not met");
					} else {
						$this->DebugPrint("Number flagged as Dangerous, comment/search threshold met, setting call as SPAM");
						$this->spam = true;
					}
					break; 

To handle the negative case, a new case statement needs to be introduced – this should be handled the same as Dangerous or Harassing.

If there was a desire to clean up the code, Dangerous, Harassing and Negative could be all combined into the same 'case' statement body, as they are handled the same way.