Save settings to localstorage (PoC in progress)

[wvanderp]

I was doing some maproulette challenges where we needed to look at Mapillary images to determine the brand of ATMs. At first, I was navigating to Mapillary with a Chrome extension, but then I discovered that this was built into the ID editor.

The not-so-nice thing is that I needed to enable and configure the filters every time I started a new challenge. I thought: “why is this not saved?”.

I decided to look into the code and see if I could fix it. And I now have a Proof of concept where the street-level photo settings are remembered.

Now, I'm here to discuss this change. I have the following questions:

• Is this something the project is interested in?
• What do we want to include in this change?
  • Only layers or also the other “settings” tabs?
• Do we want to use core/preferences.js for this purpose?
• Do we want to make this configurable?

I'm looking forward to answers, feedback, and suggestions. When I hear some positive voices, I will create a PR.