relax SVN archive

Added the document-edit Oxygen icons.

Added all sizes of the dialog-ok and dialog-ok-apply Oxygen icons.

The user function args can now have minimum and maximum values for integers specified.

This was accidentally partly committed in the last commit! The min and max args can now be given,
and these are then propagated all the way to the GUI elements. For the Sequence and Sequence_2D
elements this has no effect yet as they do not implement wx.SpinCtrl elements.

Eliminated the 'prune' argument to the monte_carlo.error_analysis user function.

This will never be used again, and might tempt some users into changing the value and damaging their
analysis!

Created a wizard graphic for the monte_carlo user functions from the oxygen 'actions/roll' icon.

Converted the monte_carlo user functions to the auto-generation design.

Missing RelaxError import.

Added the 'roll' Oxygen icon and a blue coloured version for use in the monte_carlo menus.

Created an icon representing frequency.

This is being used by a number of user functions and classes.

Created an icons for the jw_mapping user function class.