relax SVN archive

More indentation fixes (introduced at r14608).

Fix for an indentation problem introduced at r14608.

Fixes for the relax controller and pipe editor and results viewer windows under MS Windows.

These windows were all dark grey, the default frame colour under MS Windows. Now all elements are
packed into a wx.Panel which sits inside the wx.Frame.

Added checks for a current data pipe to a number of GUI user function pages.

This prevents relax errors when trying to launch the user functions but when no data pipes exist.

The screen is no longer cleared prior to relax execution on MS Windows.

This prevents the Windows PowerShell history from being wiped out.

Fix for the MS Windows BAT file so that relax can be launched from the Windows PowerShell.

Fix for the dauvergne_protocol model-free auto-analysis with the deletion of data pipes.

Now only the data pipes created by dauvergne_protocol are deleted. This fixes the problem whereby
data pipes from other analyses are deleted by dauvergne_protocol, breaking the GUI.

Bug fix for the Rx auto-analysis GUI test.

The read only spectrum ID combobox values should be set with SetStringSelection().

Improved the RelaxError messages in validate_sequence().

The invalid data is now printed so that the user can see why it is invalid.

Fix for the spin viewer window for MS Windows.

The get_info() method now catches if no item is selected in the tree before trying to get the Python
data from it. Asking for Python data from a missing TreeCtrl item ID works on GNU/Linux and Mac OS
X, but not on MS Windows.