relax SVN archive

Fixes for the GUI tests.

The 'name' argument was converted to 'uf_name' as 'name' already exists as an argument in many user
functions. A number of keyword args were also added, as these are required for the execute_uf GUI
test method.

The user function data object add_class() and add_uf() methods now check for uniqueness.

This is to catch coding errors whereby the user function class or name has been duplicated.

Removed the now useless 'functions' module.

The Bmrb.test_bmrb_rw GUI test is now complete and fully uses the new auto-generated user functions.

This test will only pass once all the relevant user functions are converted to the auto-generation
design!

The 2D sequence args of the auto-generated GUI user functions now matches the normal sequence elements.

The String_list_of_lists_window has been converted to Sequence_window_2D which inherits from
Sequence_window. All Python types and sequences supported by the Sequence GUI element are now
supported by the Sequence_2D element (which is the old String_list_of_lists).

Removal of a debugging print out.

Converted all of the align_tensor user functions to the auto-generation design.

Fix for the Combo_list GUI element - all of the combo boxes are now properly updated with values and data.

Fix for the Uf_page.on_display() method for choice iterators which return strings.

Strings are a sequence type, so len() is not a valid test!

Merged all of the sequence wizard page GUI elements into one.

This is to significantly simplify the code.