Changed GetEnvironment.py so that it no longer queries ACP, which would start ACP if it was not running.  This may have contributed to confusing situations with ACP, perhaps multiple instances running?  In any case, this was removed for troubleshooting/simplicity.

Changed MakeNightlyPlots.py:
* Recent 2 hour plot no longer made if you are invoking the program to plot a day other than today.
* Formatting changes to plots to explicitly put in dots on data points, so it was clear when data gaps exist.
* Made it so that the nightly plot was not made for today if it was not yet night (plot would be blank).