bash script file name inconsistency

[tylerbarna]

In the flow of scripts executed every day, there's a mix of .sh and .txt files that are executed, but there isn't a particularly clear reason for files being one or the other. One could either define the distinction and alter the files to reflect that or one could also just make them all .sh files. Because some of the files are referenced explicitly in other files, this would probably be good to branch and ensure compatibility before merging back in to the main branch.