overwrite each other in RX pane (textEditRX)
Context:
When multiple stations reply to a group-addressed query (i.e.
"@GROUP QUERY MSGS") within the same second, their replies share an
identical rendered timestamp string in textEditRX. The avoid
duplicate line logic in processCommandActivity() searched backward
for that timestamp string alone and erased whatever block it found,
with no check that the found block actually belonged to the same
sender. With enough replies landing in one processing tick, each new
reply erased the previous different station's line, leaving only
the last reply visible in textEditRX (the incoming MSG pane)
Thanks to John W2KI for reporting this bug and testing the fix
rename remaining files that didn't match their class definitions
relocate the explicit UI_Constructor member function to JS8_MainWindow
relocate the processBufferedActivity member function to JS8_MainWindow
format affected files with LLVM clang-format
Set default APRS inbound relay to off
Fix layout of General->Networking & Autoreply tab in Settings
