FileManagement package

Lots of work this past week on the FileManagement package.  Not yet finished, but getting close.  Note that JavaDoc comments are in need of tweaking and should not be trusted.
SimpleImmutableEntry == awesome - I didn't even know this class existed. I have my own Pair class (which are easy to write) but now I can replace it with this class. (Always better to use JDK classes rather than rolling your own.) I love it when I learn stuff from students. 10 points for gryffindor!, err I mean ... never mind. Nice work.