#187 several away messages

[tokes]

I would like sim to remember several away messages I entered (the last ones?)
, not only the last one. It would be nice to have a list to seclect from instead of
writnig them new each time.

Further it may be nice to select one of them as default, what then meens that
this one is used when sim switches to away mode after inactivity.

Thanks for reading