All texts: add support for links

Hi! Would very useful to have links in description etc. Preferably automatically detect urls and make them links.

Example text with links:

# Weather beta
Sadekartta shows rain on map more precisely than FMI
https://sadekartta.fi/14/66.523/24.31/

Closest road weather cameras
Meltosjärvi in east https://liikennetilanne.fintraffic.fi/kelikamerat/?cameraId=C14537
Mellakoski in south https://liikennetilanne.fintraffic.fi/kelikamerat/?cameraId=C14606