Resolving cross-origin bug when retrieving flowlines by proxying geoserver requests.
Accidentally worked on a branch. Merging branch 'GLRIDB-77' into master.
Merge branch 'master' of github.com:USGS-CIDA/glri-afinch
Merge pull request #56 from cschroed-usgs/master

Proxying geoserver requests to avoid cross-origin tainted canvas security bug