Handle missing ccd_temp data for one obsid
Extend the last state to contain the last obsid

For the temperature model calculation, if the last backstop
command does not extend at least 5 minutes into the last obsid,
there won't be any temperature prediction values available.
This change just extends the last state to match the observation
stop time from the processing summary if needed.

Fixes ccd temperature failure on 2012/MAR2612/oflsb
Include command line 'T_aca' as 'aacccdpt' in state0

This allows the input initial temperature to actually be used.
Skip temperature calc for obsids missing start / stop times

In starcheck.cal_ccd_temps, just skip the obsid intervals for Obsids
missing start/stop times.  This can happen for obsids in the beginning
of a replan/reopen week (2014/JAN2514/oflsa) when the NONE obsids are
not completely defined, but also aren't really in the products being
evaluated.