Bug 4782 - Layout styling for contextual hover menu may need looking at

http://bugs.dwscoalition.org/show_bug.cgi?id=4782
-- Update CSS to use new nomenclature
-- Update CSS to remove extra styling such as border-radius
-- Match link colors to background color for better readability
-- Removed now redundant CSS due to better color matching

N.B. Also added background shadow to popup userpic in Database.