Imported from archive.

* archetype, mudpy.conf (__control), mudpy.py (User.new_avatar),
template: Retermed template as archetype.

* mudpy.py: Added more code commentary, and refactored some sections
of the source to improve readability.
(DataFile.is_writeable, DataFile.save): Abstracted out the writeable
check from the save method into a separate method.
(DataFile.save): Adjusted to only write when elements within that
file have been modified.
(Element.delete): Removed obsolete method, recently implemented more
cleanly as remove_facet.