Docs update of the pelican core install depedencies
PyPI links for pelican depedencies
Update webassets plugin to allow user to pass configuration settings to Webassets through their settings file. Also removed language about DEBUG not compiling CSS since as of at least webassets 0.8 this is no longer an issue.
settings: Fix abspath existence check for path settings

The path to check is `absp`.  `p` is the setting name.
contents: Page.url_format should expose all metadata

I want to add `directory` metadata to each page in `content/pages/` to
place my non-article pages by hand:

  PAGE_URL = '{directory}/{slug}'
  PAGE_SAVE_AS = '{directory}/{slug}/index.html'

To do this, I need the `directory` metadata for formatting the URL.
Port pelican to python 3.

Stays compatible with 2.x series, thanks to an unified codebase.
Update the "how to contribute" docs with py3k info.
Revert previously erased changes
remove py2.6 support
Annotate py3k code when needed.
Use the en-us locale for functional tests
Merge branch 'master' into py3k
Merge branch 'master' of github.com:getpelican/pelican
Damn, I forgot to update travis.
Merge pull request #661 from wking/settings-abspath

settings: Fix abspath existence check for path settings
contents: Add rich comparisons to URLWrapper for easy sorting

There have been earlier attempts to sort categories and authors
[1,2,3], but they either sorted based on the object id [3], or only
sorted the main author and categories list.

This patch uses rich comparisons (keyed off URLWrapper.name, but
easily adjustable in subclasses) to make the objects sortable without
specifying a key for each sort.  For example, now

  {% for tag, articles in tags|sort %}

works as expected in a Jinja template.

The functools.total_ordering decorator fills in the missing rich
comparisons [4,5].

[1]: 877d454c8fa979343d4881a00977d9ac8786f178
[2]: 7f36e0ed20745c73886d96d4af303b0d858b8a53
[3]: d0ec18f4dbd623c55bdf4928ee7c363f699ef696
[4]: http://docs.python.org/2/library/functools.html#functools.total_ordering
[5]: http://docs.python.org/3/library/functools.html#functools.total_ordering
docs/themes.rst: Document URLWrapper sorting for use in Jinja templates
test_contents.py: Add URLWrapper comparison tests

The name switch between wrapper_a and wrapper_b ensures that we're not
secretly comparing some other field (e.g. id(object)).
test_contents: Add tests for metadata export from Page.url_format
contents: Encode Unicode locales for Python 2 in Page.__init__

Python 2.7 chokes on Unicode locales:

  $ python2.7
  >>> import locale
  >>> locale.setlocale(locale.LC_ALL, u'ja_JP.utf8')
  Traceback (most recent call last):
    ...
  ValueError: too many values to unpack

With the addition of:

  from __future__ import unicode_literals

to tests/test_contents.py in:

  commit bebb94c15be1ae7ff7ec241f6e1de5aa18556654
  Author: W. Trevor King <wking@tremily.us>
  Date:   Tue Jan 15 22:50:58 2013 -0500

    test_contents.py: Add URLWrapper comparison tests

the locale strings in TestPage.test_datetime are interpreted as
Unicode.  Rather than fixing the encoding there, this patch updates
Page to handle Unicode locales automatically.