Mostly in the file headers.

find *Lib -type f | xargs sed -i 'N;s%^\s\+\*\n\(\s\+\*/\)%\1%'

Moving the single implementation to PL/Output mainly and eliminating the
special copies.
The abstract class seems not to be used, so eliminating it too.

Add the interface and add a vector of IntegrationPointWriter's to
process base class.

Include corresponing getter. The integration point writer are populated
in specific process' constructors.

Clang format run on near-the-header lines.

Happy New Year

* added phasefield process and test.

* apply clang-format.

* added missing integralMeasure for axisymmetric problem.

* fixed compilation errors after rebasing.

* added unconfined compression ctest.

* added missing reference.

* renamed specialFunction as calculateDegradedStress.

* changed order of stress and strain components.

* deleted unused file.

* changed IntegrationPointData.

* added local results to highlight the deviation.

* returned DeltaXCheck true.

* modified dimension in ProjectData.

* removed second order mesh.

* moved history_variable to pushBackState.

* added absolute error of displacement for beam3d test.

* removed eval() calls in calculation of stress components.

* added description for the calculateDegradedStress function.

* added types available.

* rephrased description.

* removed unused C variable.

* added model description.

* modified types of constitutive relation.

* removed CreateLinearElasticPhaseField.h.

* added a tag for phasefield_parameters.

* added missing phasefield_parameters after PHASE_FIELD.

* removed eval() calls in calculation of tensile stress component.

* moved process description to PhaseFieldProcess.h.

* added description to the undocumented function.

* created missing file in documentation.

* removed two duplicated files in phasefield process.

* removed unused file in documentation.

* removed the call to material_model.integrateStress.

* removed unused variables.

* fixed expression of length scale parameter in documentation.

Move parts from FileIO to GeoLib/IO and BaseLib/IO.

This reverts commit 05677165.

Conflicts:
	FileIO/XmlIO/XmlGspInterface.cpp
	README.md

added XmlIO; added FemEnums + Info-objects; added ProjectData; currently compile errors due to changes in PointVec