markdown: fixed ipython rendering

rhodecode/lib/markup_renderer.py

@@ -425,14 +425,17 b' class MarkupRenderer(object):'
     def jupyter(cls, source, safe=True):
         from rhodecode.lib import helpers
 
-        from traitlets.config import Config
+        from traitlets import default, config
         import nbformat
         from nbconvert import HTMLExporter
         from nbconvert.preprocessors import Preprocessor
 
         class CustomHTMLExporter(HTMLExporter):
+
+            @default("template_file")
             def _template_file_default(self):
-                return 'basic'
+                if self.template_extension:
+                    return "basic/index" + self.template_extension
 
         class Sandbox(Preprocessor):
 
@@ -458,7 +461,7 b' class MarkupRenderer(object):'
         def _sanitize_resources(input_resources):
             """
             Skip/sanitize some of the CSS generated and included in jupyter
-            so it doesn't messes up UI so much
+            so it doesn't mess up UI so much
             """
 
             # TODO(marcink): probably we should replace this with whole custom
@@ -471,11 +474,12 b' class MarkupRenderer(object):'
             return input_resources
 
         def as_html(notebook):
-            conf = Config()
+            conf = config.Config()
             conf.CustomHTMLExporter.preprocessors = [Sandbox]
             html_exporter = CustomHTMLExporter(config=conf)
 
             (body, resources) = html_exporter.from_notebook_node(notebook)
+
             header = '<!-- ## IPYTHON NOTEBOOK RENDERING ## -->'
             js = MakoTemplate(r'''
             <!-- MathJax configuration -->
@@ -514,7 +518,7 b' class MarkupRenderer(object):'
             body = '\n'.join([header, css, js, body])
             return body, resources
 
-        notebook = nbformat.reads(source, as_version=4)
+        notebook = nbformat.reads(source, as_version=nbformat.NO_CONVERT)
         (body, resources) = as_html(notebook)
         return body