ignore stupid files

Signed-off-by: Daniel Halperin <dhalperi@cs.washington.edu>
fix bounds on velocity graph -- forgot to limit to 500

Signed-off-by: Daniel Halperin <dhalperi@cs.washington.edu>
add crappy but informative display showing how long since files were updated

Signed-off-by: Daniel Halperin <dhalperi@cs.washington.edu>
change layout

Signed-off-by: Daniel Halperin <dhalperi@cs.washington.edu>
version that addresses bill's comments, ish

Signed-off-by: Daniel Halperin <dhalperi@cs.washington.edu>