In ImageViewQt fix Find CrystalBounds to find bounds over the area of the larger detector.
This button uses a method that looks for empty space in the image between segments of the detector. This will add an ROI around each area found. Currently this method assumes that there will be only one row of segments corresponding to the height of the original Pilatus detector. Need to make this adapt to the new Pilatus 2M detector where there will be a number of rows of segments. The findXtals method is the same for both the wx and Qt at this time. Should try to keep it this way to maintain the possibility for both as long as possible. This also keeps the MVC separation cleaner in the event we have to switch to something else in the future.