fix setting article fk on reusable plugins for identifying permissions

wiki/conf/settings.py

@@ -13,7 +13,7 @@ WIKI_LANGUAGE = 'markdown'
 # extend the built-in editor and customize it....
 EDITOR = getattr( django_settings, 'WIKI_EDITOR', 'wiki.editors.markitup.MarkItUp' )
 
-MARKDOWN_KWARGS = {'extensions': ['footnotes', 'headerid', 'extra', 'toc'], 'safe_mode': 'replace'}
+MARKDOWN_KWARGS = {'extensions': ['headerid', 'extra', 'toc'], 'safe_mode': 'replace'}
 MARKDOWN_KWARGS.update(getattr( django_settings, 'WIKI_MARKDOWN_KWARGS', {} ))
 
 # This slug is used in URLPath if an article has been deleted. The children of the

wiki/models/pluginbase.py

@@ -97,7 +97,7 @@ class ReusablePlugin(ArticlePlugin):
         # Automatically make the original article the first one in the added set
         if not self.article:
             articles = self.articles.all()
-            if articles.count() == 0:
+            if articles.exists():
                 self.article = articles[0]
             
         super(ReusablePlugin, self).save(*args, **kwargs)