[Angus] Add clickable street light layer to report map

Angus provide a WFS endpoint for their existing streetlight assets
and known faults.

This commit:

 - Displays clickable markers when the 'street lighting' category is selected
   on the report a problem page.
 - Displays known faults on the map
 - Includes a custom OpenLayers build for the Angus cobrand that
   includes WFS support

The custom code for adding the layers to the map is within
position_map.js, as this seemed to be currently the best place
for cobrand-specific map logic.

1 files changed, 0 insertions, 0 deletions

diff --git a/web/i/pin-spot.png b/web/i/pin-spot.png
new file mode 100644
index 000000000..6f8eb5fb5
--- /dev/null
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