Patch to make MoinMoin 1.1 (more) HTML Valid

This patch applied to MoinMoin version 1.178 helps make the output of
this Wiki more valid, by adding a doctype, removing inexistant
attributes, adding a default alt attributes for images, using properly
escaped ampersand in URIs, and setting html tag in the right orders.

It doesn't guarantee a perfect validity since there are still some
combinations of formatting that can make a page invalid, but that's
still a first step.

Hope this helps,

Dom
-- 
Dominique Hazaël-Massieux - http://www.w3.org/People/Dom/
W3C/ERCIM
mailto:dom@w3.org