relax SVN archive

Modified the alignment tensor objects.

These are now storing everything as alignment tensor parameters rather than Saupe order matrix
components and hence all the updating functions have been modified to match.

Modified the unit tests of the alignment tensor objects to use Axx rather than Sxx, etc.

Updated the set() function to set the alignment tensor parameters rather than Saupe order matrix.

Changed the list of modifiable alignment tensor objects.

Alignment tensor parameters rather than Saupe order matrix elements can now be changed.

Modified the N-state model methods to set the alignment tensor parameter rather Saupe order matrix.

Modified the display() function to allow all alignment tensors to be displayed.

Allowed the align_tensor.display() arg to be None (to display all tensors).

Set the 2-domain N-state model gradient and Hessian methods to None.

Fixes for the test___disassemble_param_vector() unit test.

Added a test to __disassemble_param_vector() to set if the model has been selected.