Make FOGUser variable set for all as FOGBase is called by FOGCore before the global currentUser variable is ready.  This leaves FOGUser blank, and for all subsequent pages, this continues to happen.  Set all abstract classes FOGUser variable at the same time seems to help this issue out.

git-svn-id: https://svn.code.sf.net/p/freeghost/code/trunk@2733 71f96598-fa45-0410-b640-bcd6f8691b32