pipe_section : cascading values for value lists

[jpdupuy]

Whenever the end user introduces data in the pipe_section form, there is no control on the inner, outer, nominal diameter which are allowed with the previously selected pipe material (pipeline_quality).
This issue has been raised by the initiators of the TDH module during the presentation I gave.

This mechanism exist in the TWW and TWA module, and should be implemented in the TDH module.
The development guide should also explain how to handle this issue (both datamodel and QGIS form side)

Reference pipe material catalog : https://github.com/qwat/qwat-data-model/blob/master/value_lists/vl_pipe_material.sql