Ref filter stipe eco car

[joel-yap]

Adds filter functionality to the carousel bars for CapShape, Ecology and Stipe, should be able to click on the icons to add filters, click again to remove the filter.

[AdamN2424]

Stipe type and Ecology filters seem to be working as intended, based on the logs. Need to sort our JSON data because no results are being displayed on these filters just yet.

I see you've added a 'stipe_features.type' field. We should keep all these values in lowercase so we don't have to use .tolower(). We can also remove the volva/ring field.
I'd also suggest changing the string passed on the stipe type carousel inputs. We don't need the word 'stipe' in there as that won't be a stipe type. so from: 'volvaringstipe' to 'volva ring'
having a space will also make the data easier to follow (for admins)

Could you make these small changes before this is merged?

[AdamN2424]

Thanks Joel.
Merging now then I'll merge the final carousel and get it all on master.