A UDP auto-logged QSO shows its Club Log (and other) upload status flick
R->Y->R even though the upload succeeds. Two refreshes race: the immediate
one after the UDP log reads the QSO at "R", the debounced one after
extsvc:uploaded reads it at "Y"; variable MySQL latency lets the older (R)
result resolve last and clobber the newer (Y) data.
Guard refresh() with a monotonic sequence number so only the most recently
issued refresh may apply its result — an older in-flight refresh is dropped.
Fixes the same class of stale-clobber for every confirmation column.
rouggy
79552bfae1