Weather layer descriptions added to web UI

I’ve added some layer descriptions to the weather beta - you can collapse/expand them on demand, and they support multiple languages (the rest of the weather UI is still waiting for localization).

Each description touches on relevance to outdoor/landscape and astro-photography.

In this screenshot, you can also see the new wind gust color map, which is much more pleasant and comprehensible than its predecessor!

The production weather environment is now performing extremely well in terms of the tile loading speed, so I think we’re ready to start expanding the layers offered and the number of forecast hours included - more to come later this week…