Cleaned up some templated HTML:

Cleaned up some templated HTML:
* Double percent (such as width=25%%) is a C format string escape.
  Changed those to a single percent (such as width=25%).
* Removed 'px' from table cellpadding and cellspacing attributes.
  Evidently this is illegal as it's always to be specified in pixels.
* Appended some </div> tags with comments denoting which div we think
  we're closing.  There may be a few mismatched ones.