Added test for suport for sti-file input for used Piping models. Made some small improvements the testdata to get some real results. Checked these results by hand to ensure correctness.
Added extra test based on last data provided by Irene for Piping (Bligh). But as the data is wrong at the moment (its based on sti-files instead of 1D-Profiles), it is WiP until the data set is corrected. Related to Issue [MWDAM-1677]