Added button to draw fly trajectories
Draw trajectory works with test case
Cleaned up some classes
Merge branch 'master' into draw-trajectory

Conflicts:
	src/edu/lclark/drosophila/Analyzer.java
	src/edu/lclark/drosophila/AnalyzerGui.java
	src/edu/lclark/drosophila/AnalyzerPanel.java
	src/edu/lclark/drosophila/ButtonPanel.java
	src/edu/lclark/drosophila/ImagePanel.java
Cleaned up code for draw trajectories
Testing with fly images
Merge branch 'master' into draw-trajectory

Conflicts:
	src/edu/lclark/drosophila/Analyzer.java
	src/edu/lclark/drosophila/ButtonPanel.java
	src/edu/lclark/drosophila/ImagePanel.java
Added colored trajectories
Fixed trajectory color bug