relax SVN archive

The pipe.create user function now creates pipe bundles in the back end.

The new ds.pipe_bundles dictionary is used to hold lists of pipes associated with the pipe bundle
name as the dictionary keys. The 'bundle' arg is passed into the ds.add() method for storage.

Added the 'bundle' keyword arg to the pipe.create user function definition.

Preparation for the implementation of pipe bundle concept - addition of system and GUI tests.

This new pipe bundling concept is simply a way of grouping data pipes together. This will be useful
for:

- Grouping and categorisation of data pipes when multiple analyses are performed.

- The model-free dauvergne_protocol auto-analysis will place all the data pipes it creates into one
bundle.

- For the GUI mode, analyses will be linked to pipe bundles rather than data pipes. This will allow
switching data pipes to activate the correct analysis.

The 'verbatim' user function description elements are now properly formatted in the GUI.

These elements now use the font.modern_small formatting to have fixed-width characters.

Table formatting improvements for the GUI user function descriptions.

Removed a now unused user function docstring parsing method.

Fix for the test_write_protein_sequence() sequence unit tests for the relax_io.write_spin_data() change.

The md5sum has changed!

Fix for relax_io.write_spin_data() for when there is no data to write out.

This function will now do nothing. The problem was introduced in the last commit.

Improved the whitespace formatting of the spin data write out of relax_io.write_spin_data().

Now the column sizes are dynamically changed to match the data being written out. This is to fix
the ugly write outs for when the name of the molecule is very long.

Replaced all mention of 'arguments' from the user function docstrings with human readable text.