Merge pull request #43 from ayan-usgs/master

merged code, slight change to eden_url fix
Added url_test, top-level page test.
Improved error reporting for invalid input.
Merge pull request #44 from rhayes-cida/master

Added url_test, improved error reporting for invalid input.
EDEN-21
Merge pull request #45 from rhayes-cida/master

Fixed static image bug EDEN-21
added change recommended to Bryan for consistency. He will do the pull
request.