relax SVN archive

Converted the missing data dialog into its own wx.Dialog derived class.

The dialog is now completely constructed by relax and will be constant across different operating
systems.

Changing the code in the generic_fns/structure/main.py

For printing out of modified spins, a test to check whether the spin_name exists or not is added.

Fix to the dauvergne_protocol GUI analysis tab data checks, matching that of r13898.

Fix for the spin data check in the dauvergne_protocol auto-analysis - deselected spins are skipped.

Added data checks for the dauvergne_protocol GUI auto-analysis tab.

This allows for a dialog telling the user what is missing.

Fix for the relaxation data check in the dauvergne_protocol auto-analysis.

Added the status/user-busy oxygen icon.

Changing the code in the test_read_xyz_internal2

Test to load a spin of the already loaded model of the molecule.

Removed a debugging print statement.

Redesigned the dauvergne_protocol mode selection.

A special GUI element has been added to the analysis tab with a button that launches a new window
for mode selection. Therefore clicking on 'Execute relax' instantly starts the analysis.