[Debugging] Make socket perror() calls more informative.
[WebSocket] Unlock block after calling FPP::MemoryMap::TextMessage()
[UI] Make cursor pointer on menu headers.
[Plugins] Bump VastFMT for newer version which fixes power, and frequency settings.
[Settings] Use our built-in helpers to print warning and set restart
flag for audio output change.
Merge branch 'master' into stage