Add ion mob slot number to the data for the user before loading Bruker timsTOF
data.


  When receiving mass spectra from the network, either:
    - create a temp file and load as if from the clipboard, then
      make an auto integration to a mass spectrum
    - display the mass spectrum directly but then inactivate the output
      strip of buttons.

When performing an integration involving rt/dt, the step required to
remove from the data set all the spectra outside of the rt and dt ranges
is too long!!!


There is one big problem with drift times: the fact that we have the
timsframe reader produces mass spectra that do not have Bruker 1/K0 values
but we do expect them all over the place. Thus, any later integration that
involves the DT dimension will crash. Really, we should be able to:

either have a single mobility value associated with a unit.
either have a member data that says that "yes, the data are for Bruker
timsTOF, but we have no 1/K0."


