began work on showing avg velocity of an arena
added in new classes for avgvelocityarena
Changed
Merge branch 'master' of ssh://github.com/PeterDrake/Drosophila

Conflicts:
	src/edu/lclark/drosophila/DataPanel.java
Fixed issue with re-analyzing movie
progress on ArenaVelocity
Fixed issue where red lines show up on graph before data has been analyzed
implemented Averge velocity of Arena
conflict management
took out sysem.outs
Merge branch 'master' into AnalyzeSelectedAreas

Conflicts:
	src/edu/lclark/drosophila/AnalyzerGui.java
	src/edu/lclark/drosophila/AnalyzerPanel.java
	src/edu/lclark/drosophila/GraphPanel.java