Making tags lower case.

boards/views.py

@@ -1,4 +1,5 b''
 import hashlib
+import string
 from django.core.urlresolvers import reverse
 from django.http import HttpResponseRedirect
 from django.template import RequestContext
@@ -77,7 +78,7 b' def _new_post(request, form, thread_id=b'
         if tag_strings:
             tag_strings = tag_strings.split(' ')
             for tag_name in tag_strings:
-                tag_name = tag_name.strip()
+                tag_name = string.lower(tag_name.strip())
                 if len(tag_name) > 0:
                     tag, created = Tag.objects.get_or_create(name=tag_name)
                     tags.append(tag)