Merge branch '900-empty-search-results-in-crash-error-500' into 'development'

Resolve "Empty search results in crash/error 500"

Closes #900

See merge request !1469

app/MetaGer.php

@@ -63,6 +63,7 @@ class MetaGer
     protected $adUrlsBlacklisted = [];
     protected $url;
     protected $fullUrl;
+    protected $enabledSearchengines = [];
     protected $languageDetect;
     protected $verificationId;
     protected $verificationCount;