DM-10: Add metadata search features to an application

Executive Summary: 
A science gateway developer or application developer needs to add metadata search features to an application he or she is developing for use by researchers.
User Importance Summary: 
Researchers and scientists in most fields use metadata to describe their data in order to preserve and communicate their understanding of the data's history, meaning, and key features. Metadata can be vital when searching for data, when reusing data, and when reproducing scientific results.
Target Communities and Sizes: 
Science gateway developers - 10 < N < 100 Application developers - 100 < N < 1,000 Researchers who use research applications and science gateways - 10,000 < N < 100,000