Firefox based mobile browser block geo perm, but doesn't notify user

[thibaultmol]

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Something that Firefox based android browser do (including fennec) is block geo permissions by default. Somehow. You'd think it would be on 'ask' by default. But it seems that for some reason it can end up in 'blocked' instead. I don't exactly know how to repro it. But i've had this problem often. I do delete the site data often to make sure i'm on the latest version. So maybe it's related to that. But basically I have moments where the geo permissions are blocked but I was never prompted to allow/deny it

Currently there is nothing that tells the user why gps isn't working. Because firefox blocked it, but the user doesn't realize. So I think it might be best if mapcomplete let's the user know it's blocked. cc @joostschouppe