Merge remote-tracking branch 'upstream/master' into master-refactor-for-cpgrid-support

Manually resolved conflicts:
	opm/core/io/eclipse/EclipseWriter.cpp
	opm/core/io/eclipse/EclipseWriter.hpp
	opm/core/props/BlackoilPropertiesFromDeck.cpp
	opm/core/simulator/initState_impl.hpp
	opm/core/wells/WellsManager.cpp
	opm/core/wells/WellsManager.hpp
Added missing file TransTpfa.hpp