Upgrade rails to 3.2.21

Gemfile.lock

@@ -34,12 +34,12 @@ PATH
 GEM
   remote: https://rubygems.org/
   specs:
-    actionmailer (3.2.19)
-      actionpack (= 3.2.19)
+    actionmailer (3.2.21)
+      actionpack (= 3.2.21)
       mail (~> 2.5.4)
-    actionpack (3.2.19)
-      activemodel (= 3.2.19)
-      activesupport (= 3.2.19)
+    actionpack (3.2.21)
+      activemodel (= 3.2.21)
+      activesupport (= 3.2.21)
       builder (~> 3.0.0)
       erubis (~> 2.7.0)
       journey (~> 1.0.4)
@@ -47,18 +47,18 @@ GEM
       rack-cache (~> 1.2)
       rack-test (~> 0.6.1)
       sprockets (~> 2.2.1)
-    activemodel (3.2.19)
-      activesupport (= 3.2.19)
+    activemodel (3.2.21)
+      activesupport (= 3.2.21)
       builder (~> 3.0.0)
-    activerecord (3.2.19)
-      activemodel (= 3.2.19)
-      activesupport (= 3.2.19)
+    activerecord (3.2.21)
+      activemodel (= 3.2.21)
+      activesupport (= 3.2.21)
       arel (~> 3.0.2)
       tzinfo (~> 0.3.29)
-    activeresource (3.2.19)
-      activemodel (= 3.2.19)
-      activesupport (= 3.2.19)
-    activesupport (3.2.19)
+    activeresource (3.2.21)
+      activemodel (= 3.2.21)
+      activesupport (= 3.2.21)
+    activesupport (3.2.21)
       i18n (~> 0.6, >= 0.6.4)
       multi_json (~> 1.0)
     arel (3.0.3)
@@ -156,17 +156,17 @@ GEM
       rack
     rack-test (0.6.2)
       rack (>= 1.0)
-    rails (3.2.19)
-      actionmailer (= 3.2.19)
-      actionpack (= 3.2.19)
-      activerecord (= 3.2.19)
-      activeresource (= 3.2.19)
-      activesupport (= 3.2.19)
+    rails (3.2.21)
+      actionmailer (= 3.2.21)
+      actionpack (= 3.2.21)
+      activerecord (= 3.2.21)
+      activeresource (= 3.2.21)
+      activesupport (= 3.2.21)
       bundler (~> 1.0)
-      railties (= 3.2.19)
-    railties (3.2.19)
-      actionpack (= 3.2.19)
-      activesupport (= 3.2.19)
+      railties (= 3.2.21)
+    railties (3.2.21)
+      actionpack (= 3.2.21)
+      activesupport (= 3.2.21)
       rack-ssl (~> 1.3.2)
       rake (>= 0.8.7)
       rdoc (~> 3.4)