Improve the handling of graph and color.

* Don't graph anything without a color.

* Hint at how to close the graph later.

* Have the graph look less like an envelope.
Dumb optimization.
Improve the color handling.
Slight layout improvement.
Limit the display to one year.
Add labels to the axis.
Make that 60 days maximum, and add labels to show how long.
Increment version number.
Merge branch 'graph'

Conflicts:
	res/layout/envelopesactivity.xml