Enigma: Fix encoding of a key search phrase (#5459)

plugins/enigma/enigma.js

@@ -296,10 +296,10 @@ rcube_webmail.prototype.enigma_search = function(props)
         props = this.gui_objects.qsearchbox.value;
 
     if (props || this.env.search_request) {
-        var params = {'_a': 'search', '_q': urlencode(props)},
+        var params = {'_a': 'search', '_q': props},
           lock = this.set_busy(true, 'searching');
 //        if (this.gui_objects.search_filter)
-  //          addurl += '&_filter=' + this.gui_objects.search_filter.value;
+//          addurl += '&_filter=' + this.gui_objects.search_filter.value;
         this.env.current_page = 1;
         this.enigma_loadframe();
         this.enigma_clear_list();