Merge develop into master

Closes #75 (closed), #76 (closed), #10 (closed), #12 (closed)

Features:

• Resource flyout now displays Markdown in addition to JSON viewer (on row click on results table)
• Query is now added to results download in JSON format.
• Download button now offers to download only selected resources (rows or map points)
• Download button now offers to download CSV in addition to JSON (not quite working for now)

Bug correction:

• Corrected bug causing page to refresh on first Basic Search