Triggered by issue_event_list being more than 5s on "emu" (my 1,500,000 event
test-machine). Reason: sorting those events on non-indexed field. Switching
to a field-with-index solved it.
I then analysed (grepped) for "ordering" and "order_by" and set indexes
accordingly and more or less indiscriminately (i.e. even on tables that are
assumed to have relatively few rows, such as Project & Team).
As discussed in #11, there are scenarios (e.g. misconfiguration) where snappea
does not pick up the tasks. Events not showing up in Bugsink, w/o further
indication why that may be, leaves people confused. Better to warn explicitly
in that case.
