v2.9.0

Fixes:

• Fixed #141: improved styling for issue edit form.
• Fixed #142: TOC assumes left by default, also added new variables to control how it looks.
• Fixed #143: $main-menu-bg-hover is now being used.
• Resolved #144: added $main-menu-bg-active variable.
• Resolved #145: added $table-list-header-bg variable.
• Fixed #147: corrected forum edit attached files icon.
• Fixed #153: improved styling for label.block.

New:

• Added styling for clear query button.
• Improved responsive sidebar menu layout.