Enhance Tailing dam tool

          Enhance Tailing dam tool:

[ ] CDA additional equation.
[ ] Make the user volume editable when you open the inflow data tab ( last page of tool) .
[ ] Save the inflow.dat data page in the xml file. Save inflow nodes, patterns and other data. For example: the user don't have to add all of the grid elements again.
[ ] Let the user change the User volume on the final form.
[ ] Create a comparison mode that exports inflow hydrographs (INFLOW.DAT) for all of the different conditions in the final page. That way, a user can run and compare the different hydrograph shapes and the different sediment concentration shapes.

@FLO-2DJJ please review the list.

FLO-2DSoftware / qgis-flo-2d-plugin