Enable all Markdown Extra in Python markdown library.

rhodecode/lib/markup_renderer.py

@@ -98,7 +98,7 b' class MarkupRenderer(object):'
         source = safe_unicode(source)
         try:
             import markdown as __markdown
-            return __markdown.markdown(source, ['codehilite', 'tables'])
+            return __markdown.markdown(source, ['codehilite', 'extra'])
         except ImportError:
             log.warning('Install markdown to use this function')
             return cls.plain(source)