Add highlight attribute to <view:a> by exact match or highlight if in "level" or "group" (aka user.*)

[mpwoodward]

(Moved from http://trac.mach-ii.com/machii/ticket/442)

Add highlight attribute to view:a by exact match or highlight if in "level" or "group" (aka user.*). This would be used to place a class name in a class CSS attribute or something