About page add missing page elements

add missing page elements
CSS fixes

Add styling for new logoff button, and fix a few errors over the site.
Add div id to sidebox template

Create id for main div of a block div created by side box.  Needed to
remove extra logon box.
Remove index head and add userboxes to home page template

Add userboxes template call to top of slashboxes.  Removed indexhead a
not needed.
Add messages and logoff to user slashbox

Add extra functionality to user slashbox to make log off easier.  Moved
messages to this box as well.