Merges Actor based particle system into current master release.
Adds Sandbox mode for testing of new features. Particle system currently
being tested.
Particles now successfully generate random explosions.
Adds fading trail to particles. Causes massive drop to FPS at times -
need to put actor handling in seperate thread.
Adds a threadPool to Actors to handle execution of dedicated
PainterThread class, used for painting of Actors.
Adds additional threads for increasing the speed of Actors.
Updates FPS counter to represent actual FPS.
Changes all Arraylist iterators into Arrays to avoid concurrent
modification
Moves mouse click alert from MousePressed to MouseClicked to reduce
spam.
Increases general speed of Particle explosions. Removes MoverThread due
to lack of use.
Formats and comments Particle and ParticleEngine. Removes Alpha and
Speed decay due to lack of use.
Comments several more classes. Generates JavaDoc.
Merge branch 'particles' into 'master'

Conflicts:
	Trivia/src/trivia/Actor.java
	Trivia/src/trivia/Actors.java
	Trivia/src/trivia/GameEngine.java
	Trivia/src/trivia/Particle.java
	Trivia/src/trivia/Square.java
	Trivia/src/trivia/Triangle.java
	Trivia/src/trivia/Trivia.java