[Aavso-photometry] New AAVSO Online Airmass & ScintillationCalculator - Changes

[Aaron Price]

    Thanks for all the feedback. Glad I didn't remove the "beta
testing" stamp yet. :) I have made the following changes:

 - The list of JDs in the table began one hour *after* the JD you
entered (that airmass is at the top in bold). I adjusted it to now
include the JD entered at the top of the table re: Radu's note.
 - Fixed the Date example/help field re: Brian's note
 - Added cookies to remember latitude, longitude and aperture as they
aren't likely to change often.
 - Changed from 5 sigfigs to 4 re: many suggestions.
 - Changed airmasses >99 and <0 to say "Below (X)" where X=airmass
computed re: Mike K.'s suggestion that I choose a cutoff.
 
   I'm working with Pertti to find his reported bug and I think the
calculations for Brian's object are correct. Brian, please try them
again tonight and let me know what happens.

Aaron