Feature experience level filter

• An optional experience level filter when using the plugin Job List
• Default value is set to all -> no filter

Classes/Controller/JoblistController.php

@@ -179,6 +179,12 @@ class JoblistController extends ActionController {
 
 			// get all jobs for the current page
 			$ordering = (int) $frontendPluginSettings['orderBy'];
+			$experienceLevel = (int) $frontendPluginSettings['sortByExperienceLevel'];
+
+			if ($experienceLevel !== 0) {
+				$filters['filterExperienceLevel'] = $experienceLevel;
+			}
+
 			$this->jobRepository->setAllowManualSorting((bool) $isManualSortingAllowed);
 			$jobs = $this->jobRepository->findJobsByFilter($filters, $jobLimit, $offset, $ordering)->toArray();