1.2.4

Minor bug fixes release, update recommended for shared hosting. ### Bug fixes * If `Only enable the payment method after user explicitly chooses it` is enabled for a store and a payment method is unavailable, the server could become unresponsive. @NicolasDorier * Authorize API key page was broken when trying to select specific stores (#2858) @ubolator * The /docs page was broken in 1.2.3 due to CSP @NicolasDorier * Fixing crashes happening when someone migrate from BTCPay Server altcoins edition back to bitcoin only @Kukks