GUACAMOLE-1383: Do not double-encode client identifiers within URLs.

guacamole/src/main/frontend/src/app/client/controllers/clientController.js

@@ -239,7 +239,7 @@ angular.module('client').controller('clientController', ['$scope', '$routeParams
             ids.push(id);
 
         // Reconstruct path, updating attached clients via change in route
-        $location.path('/client/' + encodeURIComponent(ManagedClientGroup.getIdentifier(ids)));
+        $location.path('/client/' + ManagedClientGroup.getIdentifier(ids));
 
     };