Update of the IPython notebook plugin to support the upcoming 1.0 version of IPython.
Fix README.
Fix README again.
Fixing two issues with index page indices.

Issue 1: if Nikola indexes overflow from one page to two pages (i.e. `num_pages = 2`), `nextlink`
value is not set.

Issue 2: if Nikola is on the the `i == num_pages - 1` index page, it will not populate `prevlink`.
Since `prevlink` would be the `index.html` page, it needs it's own logic branch.
Merge pull request #535 from arusahni/master

Fixing two issues with index page indices.
Update
Fix #537
chart support
explain charts a bit more
Fix copyright notices.

 * (c) became ©, the proper Unicode character.
 * 2012 became 2012-2013.
 * “y otros.” became “and others.”
 * This commit message is too long for something so basic.

Signed-off-by: Kwpolska <kwpolska@gmail.com>
fix python2, part 1

Signed-off-by: Kwpolska <kwpolska@gmail.com>
litter coding: utf-8 all over nikola

Signed-off-by: Kwpolska <kwpolska@gmail.com>
comply to standards regarding version number location

Signed-off-by: Kwpolska <kwpolska@gmail.com>
change the console banners

Signed-off-by: Kwpolska <kwpolska@gmail.com>
Merge pull request #538 from ralsina/move-version-console-banners

Move version variable, update console banners
Merge pull request #531 from damianavila/ipy_plugin

Update of the IPython notebook plugin to support the upcoming 1.0 version of IPython.
Update
Persist and re-use last RSS feed build date.
Hack to repair the "guid" damage, that might flood the planet.
Added support for tag clouds to site theme.