fix comment posting on thread

tracim/tracim/controllers/content.py

 
     @tg.require(current_user_is_reader())
     @tg.expose('tracim.templates.thread.getone')
-    def get_one(self, thread_id, inverted: str=''):
+    def get_one(self, thread_id, **kwargs):
+        """
+        :param thread_id: content_id of Thread
+        :param inverted: fill with True equivalent to invert order of comments
+                         NOTE: This parameter is in kwargs because prevent URL
+                         changes.
+        """
         thread_id = int(thread_id)
         user = tmpl_context.current_user
         workspace = tmpl_context.workspace
 
         dictified_thread = Context(CTX.THREAD).toDict(thread, 'thread')
 
-        if inverted:
+        if kwargs.get('inverted'):
           dictified_thread.thread.history = reversed(dictified_thread.thread.history)
 
-        return DictLikeClass(result=dictified_thread, fake_api=fake_api, inverted=inverted)
+        return DictLikeClass(
+            result=dictified_thread,
+            fake_api=fake_api,
+            inverted=kwargs.get('inverted'),
+        )