[PVRCNC] Change to Roster Lookup Page

[Alan Knight]

I've made a few changes to the roster lookup page:

http://www.pvrc.org/5M/Roster_Lookup.php

It no longer allows an empty field, which would give a list of the full
roster.  If you need the full roster list, contact me directly.

I've also updated everyone's database entry with the latest latitude and
longitude from callook.info.  Based on this data I determined everyone's
distance from the HF and VHF circle centers.  So, when you look up your
call sign you'll see two new columns that let you know if you are in or out
of the circles.  If your callsign wasn't found on callook.info, then you
are listed as not in the circle.  If the entry is wrong, click on your
callsign and fill out the update request form.

73,
Alan - AA4FU