relax SVN archive

Missing import causing all GUI tests to fail.

Edited all the module docstrings in the user_functions package.

Split up the gui.wizard_elements into a number of modules in the new gui.input_elements package.

The user function GUI page arguments are now updated after execution of the user function.

This allows ComboBox lists to be dynamically updated, and is useful for when the user clicks on
'Apply'.

Fix for the clearing of the ComboBox version of the Value GUI element.

The ComboBox text is now reset to '' as well, to clear out the previous selection which may no
longer exist.

Merged revisions 16246,16312-16313 via svnmerge from
svn+ssh://bugman@.../svn/relax/1.3

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r16246 | bugman | 2012-05-11 20:29:02 +0200 (Fri, 11 May 2012) | 3 lines

Fixes for most of the structure user functions - the pipe check is now performed at the start.
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r16312 | bugman | 2012-05-16 12:25:52 +0200 (Wed, 16 May 2012) | 5 lines

Created a system test Mol_res_spin.test_residue_delete() demonstrating a failure of the user function.

Deleting the first residue removes the entire sequence!
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r16313 | bugman | 2012-05-16 17:11:02 +0200 (Wed, 16 May 2012) | 10 lines

Changed the behaviour of the generate_spin_id() and generate_spin_id_data_array() functions.

This is a large change affecting many parts of the code base. The problem that this solves is the
incorrect usage of the '&' character in spin IDs, tripping up on the powerful Selection object of
Chris MacRaild.

For example, the spin ID ':2&:Glu' cannot be correctly handled. This actually matches all residues
with the number 2, and all residues with the name 'Glu'. It is very strange that this has not been
noticed before!
........

Changed the behaviour of the generate_spin_id() and generate_spin_id_data_array() functions.

This is a large change affecting many parts of the code base. The problem that this solves is the
incorrect usage of the '&' character in spin IDs, tripping up on the powerful Selection object of
Chris MacRaild.

For example, the spin ID ':2&:Glu' cannot be correctly handled. This actually matches all residues
with the number 2, and all residues with the name 'Glu'. It is very strange that this has not been
noticed before!

Created a system test Mol_res_spin.test_residue_delete() demonstrating a failure of the user function.

Deleting the first residue removes the entire sequence!

The free file format GUI element is now doing something in the auto-generated user functions.

This was previously not returning any data.

Argument name fix for the dictionary returned by the Free_file_format.GetValue() method.

The error column argument for the user functions is called 'error_col'.