File opener added - important notes

-I shorted the quran text file. The program crashes trying to open the
full thing (too big most likely).
-This only works for opening Quran, need to implement for other 3
documents.
-It creates a new tab using the file name as the tab title. The only
document list displayed to the left is the file being opened.

To get this to work you must change the name in the filepath to one that
matches your username. You also need the quran.xml.txt file I've
included inside the dataset folder.