Made category search dark grey.

Disabled the wiki page category links. Need to re-visit.

Change-Id: Idbe8936fdec01e5d6e6f0b475be5b91187bf7f18
Removed the "Deletion" heading above the slider delete button.

Change-Id: Ib93b2dac80f34fc9e903ae4e498bb05afed656c6
Reduced height of details description text box.

Change-Id: Id5370366239c76be5923a78a55fd2d2fd6cd16ee