Create crawler execution / admin app

[dblodgett-usgs]

some stuff, some more reasonable than others

• social login options. maybe just github + google
• nested RBAC w/ organization and user levels similar to github orgs
  workspace listing each dataset
• wizard to add dataset link, configure which columns correspond to required fields, perhaps with preview of header + first two lines of target dataset
• option to upload dataset to some default space (subject to reasonable storage limits)
• "refresh" buttons to initiate recrawl of any datasets that don't need to change configuration
• Stats
  • total calls involving each dataset over time (line-graph)
  • Call counts of each dataset under user's management as originating point with each other NLDI dataset as navigation target
  • Call counts of each NLDI dataset as originating point with each dataset under user's management as navigation target

reach goal: option to generate URIs as geoconnex IDs using a namespace/stem text entry + column select for id, w/ prompt to go finalize at geoconnex github/ TBD similar system.