Change StandardError to RuntimeError

Since built-in exception "StandardError" does not exist in the latest python version (at least in version 3.3), use RuntimeError instead (which exists from python2.6 to python3.4)
Preserve file metadata (esp. timestamps) when copy static files to output folder.
Merge pull request #1118 from yapbreak/patch-1

Change StandardError to RuntimeError
use // instead of explicitly defining http

for twitter as well

update sample output
Merge pull request #1132 from fly/disqus_ssl

use // instead of explicitly defining http
Document video support in Markdown and reST.
Merge pull request #1129 from kdeldycke/markdown-youtube-tip

Document video support in reST & Markdown.
Improve Disqus embed code in notmyidea theme

According to Disqus, the disqus_shortname variable is a required field.
Also added a <noscript> notice for those who have JS disabled.
Add content dir to default settings file template

This adds a line to the settings file generated by pelican-quickstart
that ensures the automatically-generated "content" directory is
specified in said settings file. Fixes #1116
Fix invalid atom feed id:tag

Fixes #1039: The atom feed generated produces an invalid attribute
id:tag when SITEURL has something different that http or it contain
a subdirectory, such as:
  * https://myblog.com/
  * https://mysite.com/blog
  * http://mysite.com/blog
Fix typo in manual
Merge pull request #1142 from FloorLamp/master

Fix typo in manual
Add 'asciidoc' to the ASCIIDoc possible extensions
Merge pull request #1122 from calfzhou/copy_path

Preserve file metadata (esp. timestamps) when copy static files to output folder.
Add doc about use of metadata per article in custom templates
Merge pull request #1150 from madewulf/master

Add doc about use of metadata per article in custom templates
Various fixes to theme documentation
Log a warning when the HTML reader encounters a nonconformant meta tag

Instead of throwing an exception and skipping the HTML file, log a
warning with a message which makes it more obvious as to what happened.
Merge pull request #1151 from malept/html-reader-non-conforming-meta-tags

Log a warning when the HTML reader encounters a nonconformant meta tag
Added a new ''modified:' metadata tag to be able to specify the
publication time and date and the last modified time and date
independently.

This makes it possible to access the last updated date with {{ article.locale_modified }} in templates.
Additionally, an already delivered feed entry can be corrected by changing the modified date and time, as it is used for atom:update
/ rss pubDate field now.