Fix the main site link in the top navigation bar.

Needs to have a trailing slash for a locally served site for development.
Fixes issue #14.
Adds support for site brand image

Adds an <img> tag before the SITENAME in the navbar and the variables SITE_BRAND and SITE_BRAND_SIZE.
Adds support for related posts plugin

Adds a new template/include/ file to be used with the related posts
plugin (http://github.com/getpelican/pelican-plugins). It also adds two
new variables: SHOW_RELATED_POSTS and RELATED_POSTS_TEXT, witch will
enable related posts to be shown at the end of the article and customize
the text right above the related posts.
google analytics should be on bottom of page
include for piwik
Merge pull request #36 from romulojales/master

Write place for Google Analytics and Piwik include file
Ensure people know how to contribute
Removes the SHOW_RELATED_POSTS flag
Minor fixes to the site brand image

Changes SITE_BRAND to SITEBRAND and SITE_BRAND_SIZE to SITEBRAND_SIZE.
Also adds the missing slash between SITEURL and SITEBRAND and adds the
HIDE_SITENAME flag.
Merge pull request #15 from hlapp/fix-sitelink

Fix the main site link in the top navigation bar.
Merge pull request #35 from magnunleno/related-posts

Adds support for related posts plugin
Merge branch 'patch-4' of https://github.com/magnunleno/pelican-bootstrap3 into magnunleno-patch-4

* 'patch-4' of https://github.com/magnunleno/pelican-bootstrap3:
  Minor fixes to the site brand image
  Adds support for site brand image

Conflicts:
	templates/base.html
added favicon link in base.html
Added FAVICON option info to README.md
Merge pull request #38 from sagarbehere/favicon

Favicon
Set default TAGS_URL and CATEGORIES_URL
Append index.html to SITE_URL

Make the site link work even in a local file system
Support Simple Chinese translation

Also removed Chinese sitename for achives, tags, and catagories
pages to make it look better
Jump to another language site for articles with translations
Add link to switch between English and Simple Chinese