Made a button and text field in the button panel, button pipes what is in the text field to the sizeThreshold variable in Analyzer using delagate methods in Analyzer panel and analyzerGui.
Changed some printlines
We added a catch so that you can only input ints into the threshold textbox. Nothing happens if you enter an invalid input.
Finished choosing and displaying image in the GUI
Merge branch 'master' into display_image

Conflicts:
	src/edu/lclark/drosophila/ButtonPanel.java