relax SVN archive

Converted the calc, grid_search and minimise user function descriptions to use Desc_container.

Tables in the user function descriptions are now formatted for the prompt help strings.

This is for the Desc_container objects. The list of lists are now converted to the text format
originally used for the user function docstrings such as:

__________________________________________________________________________
| | |
| Minimisation algorithm | Patterns |
|________________________|_______________________________________________|
| | |
| Simplex | '^[Ss]implex$' |
| | |
| Levenberg-Marquardt | '^[Ll][Mm]$' or '^[Ll]evenburg-[Mm]arquardt$' |
|________________________|_______________________________________________|

Converted all of the alignment tensor user functions to the new Desc_container design.

Itemised lists and verbatim text are now formatted properly for the prompt help strings.

Converted align_tensor.init to the Desc_container object design to test itemised lists.

The Desc_container object now supports itemised lists.

Lists are now formatted for the prompt uf help strings from the Desc_container objects.

Converted the align_tensor.display user function to the new Desc_container design.

This is to test out the list generation.

The Desc_container.add_list_element() method now groups list elements together.

Converted the prompt user function objects to use the new Desc_container objects for the help strings.