Spatial metadata editor

[amercader]

Estimate 2.5d

Right now users need to manually enter a geojson value in the 'spatial' extra field in order to define a geometry for a dataset.

We need a map widget on the edit form that allows users to draw the geometry on top of a map. This will be based on the draw functions offered by OpenLayers? [1], [2].

Things to take into account:

• Integration with the form sections.
• Allow some degree of configuration (default extent, limit geometry types...)

[1] ​http://openlayers.org/dev/examples/draw-feature.html [2] ​http://openlayers.org/dev/examples/modify-feature.html