Fix for fileconverter located in a path with spaces.
changed data explorer version number from 0.0.1 to 6.0.0 Beta
Merge branch 'master' of https://github.com/ufz/ogs
domain ICs can be created in GUI similar to direct STs
domain ICs are can be read from file
formatting and removal of unneeded code
Merge pull request #422 from rinkk/DomainICinGUI

Domain ICs in GUI
adjusted radiobutton-text for shape import
removed layer tag in legacy mesh output
Merge branch 'master' of https://github.com/ufz/ogs
MeshLib::Mesh: added properties.

Added attributes and methods to manage properties.
[VtkVis] Add MaterialID as property instead to store it directly in the mesh element.

Until now the material of the element was stored in the element itself.

Signed-off-by: Thomas Fischer <thomas.fischer@ufz.de>
Setting the material group id from a property vector from MeshLib::Mesh.

Until now the material id was set directly in the MeshLib::Element.
MeshLib::Mesh: Using boost::optional to handle to return non-available property.
VtkMeshSource::RequestData: using boost::optional for requesting mesh properties.
ElementTreeModel::setElement: Use material data from mesh instead of the id of the element.
Implemented adding of properties to mesh via overloading.
Added method Mesh::getPropertyVecNames().

This method returns the names of available properties.
Adding property vecs of the mesh to vtkUnstructuredGrid.

Since the use of the names of the property vecs of the mesh it is also possible to remove attribute _matName.
Writing mesh element properties to vtu file.