Various comments and quality of life things for SingleFile.

Improvements.  Still have outfile problem, but maybe it is connected to the string filename thing.  Starting to parse the text.

Close to finishing up the SingleFile.m case.  Maybe we should change some names.  But things are looking pretty good right now.  Ask TL why the bunny looks so HDR.  Is it supposed to?

To finish tonight.

Each user now has his own folder on the cloud bucket where redering results are stored. This prevents conflicts when two users run different jobs having the same recipe name. Otherwise minor code cleanup.

Added ieDockerTest to rtbMakeChessSet.m
Need to get rid of the montage, which isn't important.
Might set the parameters for more speed.  Takes about 12 minutes on a recent MacBook Pro.

Added a local directory to put ignoreable stuff.

All a mystery to me.   Nothing working in the sense of good images.  Many apparent improvements, but the renderings just suck.  So, shifting to run the test validation on the master branch.

Many little comments and reorganizing the cloud example script.

And a few small things (output from rtbMakeSponzaAtrium -> SponzaAtrium, create image.