Sugestion: remove from translations (Weblate) payment references like Bitcoin wallet address

For a matter of security, this type of information should be removed from Weblate unless someone always checks if it wasn't changed by a malign translator. For example:

[![Donate via Bitcoin]({% asset bitcoin.png %})](https://blockchain.info/address/15u8aAPK4jJ5N8wpWJ5gutAyyeHtKX5i18): [15u8aAPK4jJ5N8wpWJ5gutAyyeHtKX5i18](bitcoin:15u8aAPK4jJ5N8wpWJ5gutAyyeHtKX5i18)

Should be:

[![Donate via Bitcoin]({% asset bitcoin.png %})]

Strings in Weblate:

I've checked all translations and they are OK except in one of them (search function in browser), but one of these days we don't know...

That one was the Arabic translation but the address was probably a mistake since it seems is not a valid Bitcoin wallet address, I've fixed it (see translation history in https://hosted.weblate.org/translate/f-droid/website-pages/ar/?checksum=21d35b6c9068f954).

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