Removed old maintenance module, that was used prior to data migrations. Cleaned up requirements. Minor fix in the tag model

boards/models/tag.py

@@ -61,11 +61,13 b' class Tag(models.Model, Viewable):'
 
         return tag_list
 
-    def get_linked_tags_list(self, tag_list=[]):
+    def get_linked_tags_list(self, tag_list=None):
         """
         Returns the list of tags linked to current. The list can be got
         through returned value or tag_list parameter
         """
+        if not tag_list:
+            tag_list = []
 
         linked_tag = self.linked
 

requirements.txt

@@ -1,3 +1,4 b''
+south
 line_profiler
 haystack
 pillow
@@ -5,6 +6,5 b' django>=1.6'
 django_cleanup
 django-markupfield
 markdown
-python-markdown
 django-simple-captcha
 line-profiler