Reduces number of implicit type narrows.

Wrong parameter names.
Empty statements.
Unify comment style. /* */ vs ///

Test and NumConfig for EigenSolvers.

Removed using namespace GeoLib.

fix includes in MeshLib and MeshGeoToolsLib

Should fix windows builds on Jenkins.

Added test for instantiating ProjectData

Remove some try catch blocks

Successfully runs both with and without gui.

This happens when OGS_BUILD_GUI=ON, see also #679.

Pass definition of OGS_BUILD_GUI to ApplicationLib

This restores the previous behaviour.

This restores behaviour prior to removing throw.

There is no recovery from the error anyway:
Assertion in debug mode will show this.
ERR in release mode.

[TCLAP] add ignoreUnmatched

Generalized interfaces to avoid temporaries.

Point3d is the base of all OGS point classes.