matplotlib Code

updates to doc

Include output images in examples in documentation.
Add "-*- noplot -*-" markers to examples where we don't want that.
The "plot" documentation directive now takes a path relative to the doc/ directory, not doc/pyplots.

more screenshot updates

more updates to docs

using exiting examples rather than new pyplot ones for screenshots

removed defunct colours mod

preparing to move entire web site to sphinx; things may be whacked for a day or so

bumbed release number

cleaned up some pyplots examples that got funkily duplicated

removing the copied files I accidentally added (sigh). It is confusing to put autogenerated files next to legit files in pyplot...