Bumped to couchgis-v1.0.7.

What's new in v1.0.7:
- Moved to Google Maps API v3.16
- You can now move shapes around, when checking for similar geometry in the
  upload page; This has no effect on the position of uploaded geometry, it just
  makes it easier to see if they are identical.
- Exports to GeoJSON is now consistent with the specification (Polygon rings
  must be closed).
- Filter documents by spatial relation to other documents' geometry.