Adds THUMBNAIL_KEEP_NAME which if set puts the thumbnail in a folder named
like the key in THUMBNAIL_SIZES.
plugin to specify maxmium number of images to appear in summary
subcategories with same basename but different parents were not unique. Fixed now.
fixed typos in README
update to the neighbors plugin to retrieve neigbors for categories and subcategories
altered plugin to work with updated subcategory plugin
Merge pull request #137 from alistairmagee/clean_summary

Add "Clean Summary" plugin
Merge pull request #143 from alistairmagee/subcategory

Sub-categories with same basename but different parents should be unique
new plugin: i18n_subsites

This plugin extends the translations functionality by creating i8n-ized
sub-sites for the default site.
This commit implements the basic generation functionality.
i18n_subsites plugin: implement jinja2.ext.i18n support

this commit introduces optional support for translatable templates
Merge pull request #142 from alistairmagee/custom_article_urls

Custom article URLs
Merge pull request #141 from alistairmagee/neighbors

Add categories and subcategories support to Neighbors plugin
Minor fixes to Subcategory plugin README
More fixes for Subcategory plugin README
fix structure of disqus_static plugin and update README
Minor fixes to Custom Article URLs plugin README
Merge pull request #144 from idyedov/update_disqus_static

Fix structure of disqus_static plugin and update README
i18n_subsites: consider templates lang, expand docs

this commit removes the need to make a dummy translation for
the language in which the templates are written.
This only affects themes using jinja2.ext.i18n.
The I18N_THEMES_LANG is introduced to address this issue.

Also expanded the docs for making gettext .po files with babel.
i18n_subsites: fix HIDE_UNTRANSLATED_CONTENT

1. was removing items of an active iterator -> only first worked
2. Article inherits Page, so first check if is Article
i18n_subsites: improve develop server support

1. main site url root fix
2. support autoreload mode
Also removed trailing slash on dir name.