relax SVN archive

Removed the vertical lines in the tables of the prompt UI help strings.

The tables now look much more professional!

The GUI user functions now use the new Desc_container and Table user function classes.

The descriptions for the user function wizard pages are now being taken from the new
user_functions.objects.Desc_container objects, lists of which are the user function definition
'desc' objects. The tables via the user_functions.objects.Table object is being formatted as in the
prompt user function help text, though without vertical lines. The lists and itemised lists are
currently formatted the same as in the prompt UI.

The Desc_container.element_loop() method can now yield the title too, if asked.

Better spacing in the list of tables section of the PDF user manual.

Complete rewrite of the docs.latex.fetch_docstrings module (accidentally partly committed at r16596).

This is a significant simplification for the creating of the user function documentation within the
user manual. Some of the long list of changes include:

- The file docs/latex/fetch_docstrings.py is no longer an executable script and now operates solely
as a Python module.

- All of the original docstring section parsing code has been eliminated. The searching for user
functions in the prompt UI namespace has been replaced

- The new user function definitions are directly used and the documentation for each user function
section generated via the self.build_*() methods.

- The complicated ascii table parsing and rebuilding into a LaTeX table has been eliminated.

- The self.write_*() methods have been created for building the various sections of the user
function documentation (paragraphs, verbatim text, prompt examples, lists, itemised lists, and
tables).

- Tables are no longer duplicated, triplicated, etc. Instead a reference to the first instance of
the table is inserted. This is a significant space saver, as one of the copies of the multi-page
X11 colour table is removed.

Renamed the Uf_tables.add_table() 'title' arg to 'caption', and added the new 'caption_short' arg.

The name change is fairly logical, as this is a caption. The 'caption_short' arg will be used for
the list of tables in the LaTeX user manual.

The Molmol colour table is no longer a longtable.

The prompt UI table creation is now using the Table.spacing variable for adding empty lines between rows.

Fixes for the prompt UI construction of the tables.

The top line was sometimes one '_' character too long. Now the correct table width is calculated as
it may not always match status.text_width.

The Monte Carlo description now uses an itemised list for the listing of the steps involved.