SiamWellTest: update to version 2.0.4

New functionality:

• Added cross module import from "PVT module" to "Recalculation module";
• Added "linear composite" model to PTA/RTA/Generate modules;
• Added support for importing data from ecrin-files with "linear composite" model.

Fixes and improvements:

• Fixed geometrical skin calculation in PTA/RTA/Generate modules;
• Fixed skin-factor constraints in PTA/RTA/Generate modules;
• Fixed data loading with optional columns in "Load module";
• Changed boundary values for well radius, skin-factor, distances to borders.