changed tabs to spaces in plotpages.py
fixed comment (env variable)
Changed default rate for JSAnimation to play
added mapc2p argument to gaugetools.plot_gauge_locations, needed for amrclaw/examples/advection_2d_annulus
fixed JSAnimation to make movies only when requested and cleaned up indentation
Merge pull request #63 from rjleveque/rjl

Mostly formatting changes in JSAnimation stuff.