Replaced accordion arrows with +/- symbols. Minor sidebar adjustments.
Made H3 font weight normal. Adjusted submenu list font size.
Enlarged +/- symbols in the sidebar.
Used active item style from ckeditor.com.
Removed vertical alignment from +/- symbols because it breaks in old IEs.
Fixed active item border on FF and old IEs.
Used default font stack for +/- symbols. Reverted font-size change.
Fixed: Subcategory header and list items move during navigation. Removed link outline on IE.
Merge branch 'sidebar-adjust'