The Rights livetable in administration does not fit the page

Use case :

• Go to Wiki/Space Administration -> Page elements and set
  • "Display the left panel column" on "Yes"
  • "Width of the left panel column" on "Medium"
  • "Display the right panel column" on "Yes"
  • "Width of the right panel column" on "Large"
• Go to Wiki Adminstration -> Localization and set wiki supported language to "fr"
• Go to Wiki/Space Administration -> Rights

On a 768×1024 resolution you will notice a scroll added because the table goes over the content.
On a 1280×600 resolution you will notice that the rights livetable is going under the right panels because the names in the table header are longer than in EN.