Avoid exception if a post doesn't exists

Avoid duplicating messages in report

generators/generator.py

@@ -47,6 +47,7 @@ class DynastieGenerator:
         self.hash_posts_content = hash_posts_content
 
     def addReport(self, string, color=''):
+        if string in self.report: return
         if color != '':
             self.report = self.report + '<span style="color:' + color + '">'
         self.report = self.report + '<b>' + self.__class__.__name__ + '</b> : '

generators/index.py

@@ -216,6 +216,7 @@ class Index(DynastieGenerator):
             if len(posts) > self.cur_post:
                 self.cur_post_obj = posts[self.cur_post]
                 post_elem = self.createPost(posts, dom, post_elem, node)
+                if post_elem is None: continue
             else:
                 post_elem = self.createElement(dom, '', '<b>No posts yet</b>')
                 self.cur_post_obj = None