Prettify search form
Try to make getting started page more useful.

- Remove the long discussion on details of Numpy arrays vs. Python lists

- Add an actual example session and an example script

- Add pointers to online resources, and point out there are books on the
  subject.

  Here, point the user only to a google books search --- we don't
  necessarily want to get into recommending certain books over others
  here.
Update links on SciPy about page
Add a pointer to PyPI on the topical software page
navigation: move 'citing' document under scipy library, and add a link to www.numpy.org
scipylib: update links
Move scipylib related stuff under scipylib/
topical-software: change link to scipy-dev --- sending mail requires subscription...
Add a link to scipy.org wiki
scipylib/dev-zone: remove steering committee, it's not on scipy.org any more

Also, add link to numpy developer guide.
Add OSX instructions from the wiki
Add pointer to OSX build instructions, and point to install page from downloads page
Update Linux build instructions from wiki
building/linux: remove irrelevant statement about intel c/mkl
mailing-lists: move etiquette to bottom, mention IRC
building/linux: minor reorganization + fix some links
download: change location of install link
mailing-lists: remove outdated info
topical-software: mention scikits
Merge pull request #10 from pv/misc-update

Misc updates