Initial release version of templates

The templates in this commit are now in RC form.
Everything but the article templates are ready.

Changes include ( no limited to ):
- Update stylesheet
- Add method in app.js to handle images in documents
- Create _author_item.html to display author information and vcard
- Update _disqus.html to fit in with site style
- Update _page_footer.html for translation support
- Add _pagination.html for pagination support
- Add _translations.html for translation listing support
- Minor updates to archives.html, tags.html
- Update base.html to have more flexibility
- Update authors.html and author.html to display information
- Update category.html and categories.html to use the _list_item.html
- Update page translation support + misc
- Update tag.html to use _list_item.html

templates/index.html

@@ -6,7 +6,7 @@
 <p>{{ SITE_DESCR }}</p>
 {% if articles and ARTICLES_ON_INDEX %}
 <h2>Recent Articles:</h2>
-<ul class="article-list">
+<ul class="item-list">
 {% for article in articles[0:ARTICLES_ON_INDEX] %}
 {% include '_list_item.html' %}
 {% endfor %}