Removed copy,swap,assignment from SimpleTagHDF5
SourceHDF5:removed copy,swap,assignment;added getter-ctor;fixed getter
SectionHDF5:rm copy,swap,assignment;added getter-ctor;fixed getter
PropertyHDF5:rm copy,swap,assignment;added getter-ctor
FileHDF5: removed copy,assignment
Fixed comments on Property ctors
FeatureHDF5:removed copy;added getter-ctor
DimensionHDF5: Removed copy,swap,assignment
DataTagHDF5:rm copy,swap,assignment;added getter-ctor
DataArrayHDF5:rm copy,swap,assigment;added getter-ctor
Specified "openGroup" 2nd param in several HDF5 entity ctors
BlockHDF5:rm copy,swap,assigment;added getter-ctor
BlockHDF5: changed getter to use getter-ctors
DataTagHDF5: changed getter to use getter-ctors
FileHDF5: changed getter to use getter-ctors
SectionHDF5: changed getter to use getter-ctors
SimpleTagHDF5: changed getter to use getter-ctors
Merge pull request #325 from balint42/fix_useless_io

Fix useless io & removed copy, swap, assignment in HDF5