Fixed image loading so that it now loads immediately upon receipt (I
think!)
Trying to improve threading. I think it works, but can't prove it.
Fixed problem where duplicate images wound up in the results.
Handling duplicate photos
Merge remote-tracking branch 'origin/master'

Conflicts:
	CSCI5828PhotoApp/src/guiHelpers/ImageButton.java
	CSCI5828PhotoApp/src/guiHelpers/MultiThreadedImageLoader.java