relax SVN archive

Modified the wizard_elements.Base_value base GUI element class to handle combo boxes.

This class can now choose between a wx.TextCtrl or a wx.ComboBox element with the element_type
keyword arg.

The Bmrb.test_bmrb_rw GUI test now uses the new execute_uf() method for the bmrb.citation uf.

Created the GUI test base method execute_uf() for executing a user function.

This is an interface which will massively simplify the creation of GUI tests, so that they can be
almost the same as normal relax scripts. This will allow for the porting of most of the system test
scripts into GUI tests. This however requires the use of the new wizard page element_*() methods
to create the GUI elements.

The bmrb.citation GUI user function now uses the new wizard page element_*() methods for the GUI elements.

Created a new wizard element for inputting integers.

This will be used for user function args which should be integers. This is based on the string
element. The wizard page element_int() method creates the element from the wizard_elements.Integer
class.

Created a new wizard element for inputting strings.

This will be used for user function args which should be strings. The wizard page element_string()
method creates the element from the wizard_elements.String class. This class inherits from
wizard_elements.Base_value which contains most of the executable code.

Created the Bmrb.test_bmrb_rw GUI test.

This incomplete test is based on the bmrb_rw.py system test script.

Completed the GUI interface for the bmrb.citation user function.

Fix for the bmrb.citation user function documentation.

The 'type' argument was not being described.

Debugging print out removal.