added thermal mass scaling factor in mixing volume and propagated it to LumpedVolumeDeclarations
used new mass multiplication factor in radiator implementation
Merge pull request #105 from Mathadon/issue102_corrFacMixVol

Issue102 corr fac mix vol
Changed density to use default medium states and made mFactor final
Merge branch 'master' into issue102_corrFacMixVol
Added revision notes for #102
Updated comment
Merge pull request #110 from iea-annex60/issue102_corrFacMixVol

Issue102 corr fac mix vol