Apache Forrest code update (bug FOR-174)

code update
by
DC
(fixes bug FOR-174)

:

Have @class attribute in DTD for every element, which enables the
"extra-css" section in the skinconf to be put to good use.
Updated all v1.2 DTDs to become v1.3 DTDs (forward compatibility:
v1.2 docs will work fine as V1.3).
Updated the v2.0a DTDs to become v2.0 DTDs (forward incompatibility:
v1.2/1.3 docs are not forward-compatible as V2.0).
Added demo of extra-css to the seed site and updated some
sample docs to use new v1.3 DTDs.
See the samples and reference docs.
See the issue report for full list of changes.
Thanks to Rick Tessner.