Analysis DGM tests and more

[ashkjones]

Changes:

• created a single test for Analysis class that checks that all the DGMs are generated properly when generateResults is called
• updated GazeEntropy to check that fixations are consecutive. "Transitions" between non-consecutive fixations are no longer counted
• Event.java (the number of L clicks) now uses the raw gaze data to ensure mouse clicks are not filtered out
  • e.g., the participant looks away from the screen to grab the mouse and clicks the left button. The L-click should still be counted even if the FPOG is off the screen.