Use native scroll on mobile devices (much better UX)
Stack settings menu items 2 column medium, 3 column large
The settings search is now forcibly focused
Moved hard-coded text in "backend" and "system" to the language files
(English and Dutch). Affected pages: administrator management,
administrator group management, system updates, system settings, email
settings. Also made some strings more generic for general use (like
"Saving...." instead of "Saving administrator account...")