added tin export to single geometry conversion
put tin export into extra function to avoid code duplication
put tin export into extra function to avoid code duplication
[FileIO/Legacy] Using two spaces instead of tabs.
resolved merge conflicts
removed surface creation from closed polylines
Merge pull request #492 from rinkk/TINConversionSingleGeometries

TIN conversion for single geometries
[PL] Fill GWFprocess::solve() and post() with next steps.
[PL] Add GlobalSetup as template to GW process.
[PL] Add global matrices to GW Process.
Merge branch 'GroundwaterFlow' into develop
[AL] Correct indentation.
Merge branch 'master' into develop