Moved Client page to its own class file and removed the client/index.php.  This will allow those who are logged in to still maneuver around the FOG pages without having to change their URLs to operate.  It will also still allow access if the user is logged out, but will not have a menu to work with. Allows, also, simpler linking in the footer to access the client page.  Adds the output buffer to ProcessLogin html generation as well.

git-svn-id: https://svn.code.sf.net/p/freeghost/code/trunk@1653 71f96598-fa45-0410-b640-bcd6f8691b32
ADD README File.