Backend backend locale: bugfixes

### 3e5715c backend locale: also get translations from other languages


When filtering on a certain value with multiple languages selected, only the translations that contain that value were showed.

Example: 
filtering on value "book".
The EN translation "book" (`$lblBook`) will show up in the datagrid, but the NL translation "boek" (which is also `$lblBook`) would not show up.

### a5383c9 backend locale: order the results so the odd/even classes are correct

The odd/even classes on the datagrid were mixed up in some cases.

### 463a547 backend locale: set datagrid url

When ordering the results, the filter was removed.