Py3: Update Django versions to most recent ones for tox.

Author: Yury Yurevich

tox.ini

@@ -10,7 +10,7 @@ commands=
 [testenv:py33-django15]
 basepython=python3.3
 deps=
-    django==1.5.4
+    django==1.5.5
     django-nose
 
 [testenv:py27-django13]
@@ -22,11 +22,11 @@ deps=
 [testenv:py27-django14]
 basepython=python2.7
 deps=
-    django==1.4.8
+    django==1.4.10
     django-nose
 
 [testenv:py27-django15]
 basepython=python2.7
 deps=
-    django==1.5.4
+    django==1.5.5
     django-nose