create Property creates a dataset instead of a group, Added Dataset to Property contructors
enabled attributes in DataSet. Copy-paste from Group. Should be extracted...
create Property creates a dataset instead of a group, Added Dataset to Property contructors
enabled attributes in DataSet. Copy-paste from Group. Should be extracted...
skip validation in TestProperty, Section creates a dummy dataset ...
Merge branch 'property_value' of https://github.com/jgrewe/nix into property_value

Conflicts:
	src/hdf5/SectionHDF5.cpp
Merge branch 'property_value' of https://github.com/jgrewe/nix into property_value
createProperty needs a Value. new method with vector of Values
changes in Property::values method to use the dataset instead the group
add a dummy value for creating properties
style fixes, Property::mapping set updated only in case a change was done
fixed failing Section::hasProperty method
fixed Property::values(vector<Value>)
fixed Property::dataType
fixed ProptertyHDF5::valueCount
fixed bug in SectionHDF::createProperty with single values
add dummy values for testProperty
add test to TestProperty for single value setting
creating of Properties uses a dummy value
needed to add a few newlines, sorry :-)