fixed request.user_agent().get('is_mobile', False), thanks Jonathan

VERSION

@@ -1 +1 @@
-Version 2.8.2-stable+timestamp.2013.12.02.02.05.46
+Version 2.8.2-stable+timestamp.2013.12.02.10.26.58

applications/admin/models/access.py

@@ -144,7 +144,7 @@ if session.is_mobile == 'true':
 elif session.is_mobile == 'false':
     is_mobile = False
 else:
-    is_mobile = request.user_agent().get('is_mobile')
+    is_mobile = request.user_agent().get('is_mobile',False)
 
 if DEMO_MODE:
     session.authorized = True