Merge pull request #1336 from maurizi/instance-extent-api

Return extent in instance info API endpoint response
Show map list on user profile page

Show banner counts/tabs on User Details page
* Categories are "Tree Maps" and "Edits"
* Use singular form ("Tree Map" or "Edit") if there's only one

"Tree Maps" list includes:
* maps the user has joined (via invite) or edited, which current user has permission to view
* the map most recently visited in the current session (if user is looking at their own list)
Fix errors
Fix lint
Fixes #1338, IE10+ styling for stewardship