[#1572] metadata extraction code updates
[#1572] metadata extraction code updates

ResearchSoftwareInstitute/MyHPOM,hydroshare/hydroshare,RENCI/xDCIShare,hydroshare/hydroshare,hydroshare/hydroshare,RENCI/xDCIShare,ResearchSoftwareInstitute/MyHPOM,RENCI/xDCIShare,ResearchSoftwareInstitute/MyHPOM,RENCI/xDCIShare,ResearchSoftwareInstitute/MyHPOM,hydroshare/hydroshare,hydroshare/hydroshare,ResearchSoftwareInstitute/MyHPOM,RENCI/xDCIShare