Finish this based on the requirements given

[xivk]

Finish this based on the requirements given in this issue:

osmbe/road-completion#12

[jbelien]

What's missing ?

I can add the layerswitch as said in osmbe/road-completion#12 ; which do you want to add ?

What else can I help you with ? :)

[xivk]

I started a new map using Mapbox GL JS in this repo because then we could make the segments selectable and we can replace maproulette. We can also use the AGIV imagery or any other as a background layer and still overlay all of the vector data.

Adding the overlay/layer switcher is always welcome! 👍

[jbelien]

Created feature-layerswitcher branch for addition of a layer switcher !

Not really happy with the resulting source code ; but it's not possible to change a layer after the map is loaded with MapboxGL so I had to "cheat".

Feel free to change anything you need to change :)

PS: Did some cleaning in the code too. I hope you don't mind ^_^