Change tabs to spaces. Fix various stylistic errors and remove
redundancy in the main gui class.
Remove intent to add .csv support.
Fix bug where the sum wouldn't be cleared and the values relying on it would be incorrect after a clear.
Add message for when the user tries to press a button and has entered
no data.

* Add bug fix for single datapoint causing nullpointer exceptions.
* Add ability to find the strays and outliers of the dataset.
* Add button and display for strays and outliers.

* Improve formatting of the about dialog.
Remove print statements. Add makefile. Update .gitignore. Remove
the old Jar/.
Update the readme file. Remove part in the makefile that removes the
generated jar and its directory.