s/pylab/matplotlib in docs

[Carreau]

There are still actually quite a few places that reference --pylab ...

[minrk]

Any more?

[Carreau]

Yes a lot. will push tomorrow, but need to read carefully to be sure we want to replace pylab by MPL. (like wave example)

[Carreau]

Not that much and I'm actually wondering for many what we should do., like in ipapp.py:

 warn.warn("`-pylab` flag has been deprecated.\n"
            "    Use `--pylab` instead, or `--pylab=foo` to specify a backend.")
            sub = '--pylab'

Advise --matplotlib and to explicitely import pylab ?

[minrk]

Yes, I guess we should recommend --matplotlib there.

[minrk]

Will wait for you to ping before review/merge.

[Carreau]

Ok for review. If you want to grep one more time, I may have missed some. A few example still have --pylab, but they should probably be re-written to work with --matplotlib. one of the other case where I didn't removed the --pylab was the plain ipython --pylab.

[minrk]

Actually remove this one - I don't think we should be recommending that anyone start the notebook with matplotlib enabled.

[minrk]

more in:

• config/editors L81,83
• config/overview L487
• interactive/qtconsole L77,115,119,180, 549
• parallel_demos L12

I can finish those up, if you want.

[Carreau]

Sure, especially parallel I don't use it a lot and would prefer to have those tested.

[minrk]

PR sent against your branch

[Carreau]

updated.