Support Data Quality

[jlblcc]

Implement support for ISO 19157 quantitative data quality elements, map to FGDC CSDGM.

http://standards.iso.org/iso/19157/-2/mdq/1.0/index.html http://wiki.esipfed.org/index.php/DQ_DataQuality

From FGDC CSDGM:

https://www.fgdc.gov/csdgmgraphical/dataq.htm

• [ ] attribute accuracy
• [ ] positional accuracy
• [ ] completeness
• [ ] logical consistency

[jlblcc]

FYI @pshealy

[jwaspin]

@hmaier-fws @dwalt Can/should this one be closed?

[dwalt]

@jwaspin @hmaier-fws Yes, this can be closed. A major milestone!