They were masking the real performance of `flowPhyloAPI`.

It's a useful function to log (with `DEBUG` severity) the execution time
of various functions. Debug logs won't be printed in production.

It also improves the error in case it's the first time we are running
the tests and we have no coreNLP service running.

This commit adds a `panicTrace` function to be used as a drop-in
replacement of the `panic` function, with the difference that we
wrap the error in a `WithStacktrace` error, to be later caught
and logged.

This allows us to have only one single (static) map which will be
treated by GHC as a CAF.

We do that thanks to a new typeclass method for
the `MonadJobStatus` called `noJobHandle`.

This commit modifies the backend code to convert the input CSV into an
`NgramsList`, so that we can reuse the JSON API for the upload.

it also brings the CSV and JSON APIs closer in look.
Temporarily disable the `importCsvFile` function.