Update Spree: Fix admin authorization errors

Gemfile.lock

@@ -30,7 +30,7 @@ GIT
 
 GIT
   remote: git://github.com/openfoodfoundation/spree.git
-  revision: ba444ace4de81626ef0a69a44123e25084874b4a
+  revision: 4a0013618dbd5bae254e921565bf51d3dd5ccd24
   branch: spree-upgrade-step-2
   specs:
     spree (1.3.99)
@@ -208,7 +208,7 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.10.0)
-    colorize (0.7.7)
+    colorize (0.8.1)
     columnize (0.9.0)
     compass (1.0.3)
       chunky_png (~> 1.2)
@@ -456,7 +456,7 @@ GEM
       treetop (~> 1.4.8)
     method_source (0.8.2)
     mime-types (1.25.1)
-    mini_portile2 (2.0.0)
+    mini_portile2 (2.1.0)
     momentjs-rails (2.5.1)
       railties (>= 3.1)
     money (5.0.0)
@@ -465,8 +465,8 @@ GEM
     multi_json (1.12.1)
     multi_xml (0.5.5)
     newrelic_rpm (3.12.0.288)
-    nokogiri (1.6.7.2)
-      mini_portile2 (~> 2.0.0.rc2)
+    nokogiri (1.6.8.1)
+      mini_portile2 (~> 2.1.0)
     oj (2.1.2)
     orm_adapter (0.5.0)
     paper_trail (3.0.8)
@@ -628,7 +628,7 @@ GEM
       sprockets (>= 2.0.0)
     turn (0.8.3)
       ansi
-    tzinfo (0.3.49)
+    tzinfo (0.3.52)
     uglifier (2.7.1)
       execjs (>= 0.3.0)
       json (>= 1.8.0)