preparations for unit scaling
add boost::regex to cmake boost components
implemented getScaling
test for util
new check unit methond, minor refactor
removed old dataTag tests
Bugfix in Block.hpp dataTagCount no longer counts dataArrays
Test for dataTag
Merge branch 'master' of https://github.com/G-Node/pandora
Merge branch 'master' of https://github.com/G-Node/pandora
renaming of methods checkSIUnit, getSIScaling since they check only si units
removed setters for positions and extents called with DataArray objects from internal interfaces
sync commit, non functional
Merge branch 'master' of https://github.com/jgrewe/pandora-1
implemented test following the example of TestSource
Merge branch 'master' of https://github.com/G-Node/pandora

Conflicts:
	include/nix/util/util.hpp
renaming
Testwork for DataTag
removed hasReference(DataArray) from interface, remoceReference takes
the id instead of the DataArray
improved SI unit matching includes compound types and units with power