Reduce warnings and errors in sample content

This reduces the warnings and errors when generating the sample content
from twelve to one (intentional) warning. The latter is expected by
assertLogCountEqual() in the "test_basic_generation_works" test.

samples/content/another_super_article-fr.rst

@@ -1,6 +1,7 @@
 Trop bien !
 ###########
 
+:date: 2010-10-20 10:14
 :lang: fr
 :slug: oh-yeah
 

samples/content/another_super_article.rst

@@ -5,6 +5,7 @@ Oh yeah !
 :date: 2010-10-20 10:14
 :category: bar
 :author: Alexis Métaireau
+:lang: en
 :slug: oh-yeah
 :license: WTFPL
 

samples/content/draft_article.rst

@@ -1,6 +1,7 @@
 A draft article
 ###############
 
+:date: 2011-05-08 15:58
 :status: draft
 
 This is a draft article, it should live under the /drafts/ folder and not be

samples/content/pages/test_page.rst

@@ -5,8 +5,12 @@ This is a test page
 
 Just an image.
 
-.. image:: |filename|/pictures/Fat_Cat.jpg
+.. image:: {static}/pictures/Fat_Cat.jpg
    :height: 450 px
    :width: 600 px
    :alt: alternate text
 
+.. image:: |filename|/images/Fat_Cat.jpg
+   :height: 450 px
+   :width: 600 px
+   :alt: wrong path since 'images' folder does not exist

samples/pelican.conf.py

@@ -40,13 +40,16 @@ EXTRA_PATH_METADATA = {
 
 # static paths will be copied without parsing their contents
 STATIC_PATHS = [
-    'pictures',
+    'images',
     'extra/robots.txt',
     ]
 
 # custom page generated with a jinja2 template
 TEMPLATE_PAGES = {'pages/jinja2_template.html': 'jinja2_template.html'}
 
+# there is no other HTML content
+READERS = {'html': None}
+
 # code blocks with line numbers
 PYGMENTS_RST_OPTIONS = {'linenos': 'table'}