Removed radio buttons on geofacet.
Unix line endings.
Pre-refactor commit in case anything goes horribly wrong :-)
Introduced new class for the geo facet control panel.
Delete redundant code.
Added some unit tests.
Merge pull request #277 from aodn/geofacet_using_openlayers_controls

Geofacet using openlayers controls

My concerns are that the controls look cartoon like and do not match the styles of our existing controls. I understand that this might be because the styles are being set directly on the OpenLayers components, which in itself is a concern. Ideally we want correct CSS in our CSS files so maybe we need to add some sort of fix/adjustment to this to make it work with current portal styling.