* If there's no replay context we can still use the live connection to
copy and delete captures remotely. Try to use that whenever possible
and warn the user when it's not possible (i.e if the program has been
closed and there's no replay context, we have no way to access the
files anymore).
* If the user tries to open a remote log without a replay context,
prompt them either to swithc to a replay context on that host or to
save the log locally.