Change .txt files to .csv files

[DevonFulcher]

I believe many of our input .txt files could actually be .csv files with minimal change to our code. This will decrease the amount of effort required from our users. Instead of changing input files from .xlsx to .csv then from .csv to .txt, our users could simply change their .xlsx files to .csv files.

[DevonFulcher]

In the code, I have changed Student Data.txt to Student Data.csv, Alumni Data.txt to Alumni Data.csv, and majorsList.txt to Majors List.csv