Some small fixes:

Prevent an abort during start (due no app parameter to Blog)
Cleanup disqus template (no comments)
Allow to run without Werkzeug/AtomFeed
etc

ablog/__init__.py

@@ -9,6 +9,7 @@ from .post import (PostDirective, PostListDirective, UpdateDirective,
                    missing_reference)
 
 __version__ = '0.7.7'
+__version__ += '-GAM'
 
 
 def anchor(post):

ablog/blog.py

@@ -94,7 +94,7 @@ class Blog(object):
     # using a shared state
     _dict = {}
 
-    def __init__(self, app=None):
+    def __init__(self, app):
 
         self.__dict__ = self._dict
         if not self._dict:

ablog/post.py

@@ -275,7 +275,7 @@ def process_posts(app, doctree):
                     except ValueError:
                         raise ValueError('invalid post date in: ' + docname)
                 else:
-                    raise ValueError('invalid post date in: ' + docname)
+                    raise ValueError('invalid post date (%s) in: ' % (date) + docname +" expected format=%s" % post_date_format)
 
         else:
             date = None
@@ -361,7 +361,7 @@ def process_postlist(app, doctree, docname):
     """Replace `PostList` nodes with lists of posts. Also, register all posts
     if they have not been registered yet."""
 
-    blog = Blog()
+    blog = Blog(app)
     if not blog:
         register_posts(app)
 
@@ -389,7 +389,7 @@ def process_postlist(app, doctree, docname):
         fmts = list(Formatter().parse(node.attributes['format']))
         for text, key, __, __ in fmts:
             if key not in {'date', 'title', 'author', 'location', 'language',
-                'category', 'tags'}:
+                'category', 'tags', None}:
                 raise KeyError('{} is not recognized in postlist format'
                     .format(key))
 
@@ -407,6 +407,8 @@ def process_postlist(app, doctree, docname):
             for text, key, __, __ in fmts:
                 if text:
                     par.append(nodes.Text(text))
+                if key is None:
+                    continue
                 if key == 'date':
                     par.append(nodes.Text(post.date.strftime(date_format)))
                 else:
@@ -440,7 +442,6 @@ def process_postlist(app, doctree, docname):
                     app.env.resolve_references(enode, docname, app.builder)
                     enode.parent = bli.parent
                     bli.append(enode)
-                bli.append(nodes.line())
 
         node.replace_self(bl)
 
@@ -566,7 +567,12 @@ def generate_atom_feeds(app):
     if not url:
         raise StopIteration
 
-    from werkzeug.contrib.atom import AtomFeed
+    try:
+        from werkzeug.contrib.atom import AtomFeed
+    except ImportError:
+        app.warn("Can't import werkzeug's AtomFeed. Continue without atom/rss/feeds support")
+        return
+    
     feed_path = os.path.join(app.builder.outdir, blog.blog_path, 'atom.xml')
 
     feeds = [(blog.posts,
@@ -648,7 +654,7 @@ def generate_atom_feeds(app):
 def register_posts(app):
     """Register posts found in the Sphinx build environment."""
 
-    blog = Blog()
+    blog = Blog(app)
     for docname, posts in getattr(app.env, 'ablog_posts', {}).items():
         for postinfo in posts:
             blog.register(docname, postinfo)

ablog/templates/page.html

@@ -6,7 +6,7 @@
   <link rel="alternate" type="application/atom+xml"  href="{{ pathto(feed_path, 1) }}/atom.xml" title="{{ ablog.blog_title }}">
   {% endif %}
   {% if ablog.fontawesome_link_cdn%}
-  <link href="http://netdna.bootstrapcdn.com/font-awesome/4.0.3/css/font-awesome.min.css" rel="stylesheet">
+  <link href="{{ ablog.fontawesome_link_cdn }}" rel="stylesheet">
   {% elif ablog.fontawesome_css_file %}
   <link rel="stylesheet" href="{{ pathto('_static/' + ablog.fontawesome_css_file, 1) }}" type="text/css" />
   {% endif %}
@@ -30,12 +30,11 @@
     <h2>Comments</h2>
     <div id="disqus_thread"></div>
     <script type="text/javascript">
-        /* * * CONFIGURATION VARIABLES: EDIT BEFORE PASTING INTO YOUR WEBPAGE * * */
-        var disqus_shortname = '{{ ablog.disqus_shortname }}'; // required: replace example with your forum shortname
+        var disqus_shortname = '{{ ablog.disqus_shortname }}';
         var disqus_identifier = '{{ablog.page_id(pagename)}}';
         var disqus_title = '{{title|e}}';
         var disqus_url = '{{ablog.page_url(pagename)}}';
-        /* * * DON'T EDIT BELOW THIS LINE * * */
+
         (function() {
             var dsq = document.createElement('script'); dsq.type = 'text/javascript'; dsq.async = true;
             dsq.src = '//' + disqus_shortname + '.disqus.com/embed.js';