Abort in OGS_FATAL()

[Jenkins] Exclude CLI from gcc Data Exlorer build.

fix CMake error with VTK shared libs

Possibly fixing sporadic ldd errors. Closes #1416.

Classes for fluid density models

[Jenkins] Docs generation

Run doxygen-job on ufz master only.

e.g. replaced final specifier with override in each member declaration.

[NodeReordering] check each element

Fix mac warnings and run clang job.

Fix a bug accessing data in PropertyVector.

Fix an issue in `BaseLib::copyPathToFileName`

Setting build status to UNSTABLE when it is already FAILED does
not work. See http://stackoverflow.com/a/38321558/80480.