OrbitalInfo primitive interface

Carol pushed me to make a non-URL based interface to the OrbitalInformation web-service.
I did, in an hour or so and deployed here: http://gsky.stsci.edu/OrbitalInfo/
It's rather primitive put at least it captures most of what we want.

Two things I will have to change:
  • Add support for asking for more than 1 satellite at a time
  • Allow users to decide how many days of orbits they want to see