- fixed height on the width controller element causes the user to get
  'stuck' and unable to scroll back to the top when clicking on a link
targeting an in page anchor

- moved widthcontrol-handler element out of menu tpl and into pagelayout
  left-separator
- updated widthcontrol-handler element styles for new markup position
- removed widthcontrol-handler elements from all other admin design menu
  templates

- removed obsolete height style from widthcontrol

- removed unit suffix from widthcontrol top position