Rails 4 upgrade

Gemfile.lock

@@ -11,34 +11,36 @@ PATH
 GEM
   remote: https://rubygems.org/
   specs:
-    actionmailer (4.0.5)
-      actionpack (= 4.0.5)
+    actionmailer (4.1.1)
+      actionpack (= 4.1.1)
+      actionview (= 4.1.1)
       mail (~> 2.5.4)
-    actionpack (4.0.5)
-      activesupport (= 4.0.5)
-      builder (~> 3.1.0)
-      erubis (~> 2.7.0)
+    actionpack (4.1.1)
+      actionview (= 4.1.1)
+      activesupport (= 4.1.1)
       rack (~> 1.5.2)
       rack-test (~> 0.6.2)
     actionpack-action_caching (1.1.1)
       actionpack (>= 4.0.0, < 5.0)
+    actionview (4.1.1)
+      activesupport (= 4.1.1)
+      builder (~> 3.1)
+      erubis (~> 2.7.0)
     active_model_serializers (0.8.1)
       activemodel (>= 3.0)
-    activemodel (4.0.5)
-      activesupport (= 4.0.5)
-      builder (~> 3.1.0)
-    activerecord (4.0.5)
-      activemodel (= 4.0.5)
-      activerecord-deprecated_finders (~> 1.0.2)
-      activesupport (= 4.0.5)
-      arel (~> 4.0.0)
-    activerecord-deprecated_finders (1.0.3)
-    activesupport (4.0.5)
+    activemodel (4.1.1)
+      activesupport (= 4.1.1)
+      builder (~> 3.1)
+    activerecord (4.1.1)
+      activemodel (= 4.1.1)
+      activesupport (= 4.1.1)
+      arel (~> 5.0.0)
+    activesupport (4.1.1)
       i18n (~> 0.6, >= 0.6.9)
-      minitest (~> 4.2)
-      multi_json (~> 1.3)
+      json (~> 1.7, >= 1.7.7)
+      minitest (~> 5.1)
       thread_safe (~> 0.1)
-      tzinfo (~> 0.3.37)
+      tzinfo (~> 1.1)
     addressable (2.3.6)
     airbrake (3.1.2)
       activesupport
@@ -46,7 +48,7 @@ GEM
     annotate (2.6.1)
       activerecord (>= 2.3.0)
       rake (>= 0.8.7)
-    arel (4.0.2)
+    arel (5.0.1.20140414130214)
     barber (0.4.2)
       ember-source
       execjs
@@ -56,7 +58,7 @@ GEM
       erubis (>= 2.6.6)
     binding_of_caller (0.7.2)
       debug_inspector (>= 0.0.1)
-    builder (3.1.4)
+    builder (3.2.2)
     celluloid (0.15.2)
       timers (~> 1.1.0)
     certified (0.1.1)
@@ -164,7 +166,7 @@ GEM
     method_source (0.8.2)
     mime-types (1.25.1)
     mini_portile (0.5.3)
-    minitest (4.7.5)
+    minitest (5.3.3)
     mocha (1.0.0)
       metaclass (~> 0.0.1)
     mock_redis (0.11.0)
@@ -244,19 +246,21 @@ GEM
       rack
     rack-test (0.6.2)
       rack (>= 1.0)
-    rails (4.0.5)
-      actionmailer (= 4.0.5)
-      actionpack (= 4.0.5)
-      activerecord (= 4.0.5)
-      activesupport (= 4.0.5)
+    rails (4.1.1)
+      actionmailer (= 4.1.1)
+      actionpack (= 4.1.1)
+      actionview (= 4.1.1)
+      activemodel (= 4.1.1)
+      activerecord (= 4.1.1)
+      activesupport (= 4.1.1)
       bundler (>= 1.3.0, < 2.0)
-      railties (= 4.0.5)
-      sprockets-rails (~> 2.0.0)
+      railties (= 4.1.1)
+      sprockets-rails (~> 2.0)
     rails-observers (0.1.2)
       activemodel (~> 4.0)
-    railties (4.0.5)
-      actionpack (= 4.0.5)
-      activesupport (= 4.0.5)
+    railties (4.1.1)
+      actionpack (= 4.1.1)
+      activesupport (= 4.1.1)
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
     raindrops (0.13.0)
@@ -310,9 +314,9 @@ GEM
       sass (~> 3.2.0)
       sprockets (~> 2.8, <= 2.11.0)
       sprockets-rails (~> 2.0.0)
-    seed-fu-discourse (2.2.0)
-      activerecord (>= 3.1, < 4.1)
-      activesupport (>= 3.1, < 4.1)
+    seed-fu-discourse (2.2.1)
+      activerecord (>= 3.1, < 4.2)
+      activesupport (>= 3.1, < 4.2)
     shoulda (3.5.0)
       shoulda-context (~> 1.0, >= 1.0.1)
       shoulda-matchers (>= 1.4.1, < 3.0)
@@ -371,7 +375,8 @@ GEM
       polyglot
       polyglot (>= 0.3.1)
     trollop (2.0)
-    tzinfo (0.3.39)
+    tzinfo (1.1.0)
+      thread_safe (~> 0.1)
     uglifier (2.4.0)
       execjs (>= 0.3.0)
       json (>= 1.8.0)

app/models/concerns/trashable.rb

@@ -15,11 +15,7 @@ module Trashable
       #
       # with this in place Post.limit(10).with_deleted, will work as expected
       #
-      scope = if rails_master?
-        self.all
-      else
-        self.all.with_default_scope
-      end
+      scope = self.all
 
       scope.where_values.delete(with_deleted_scope_sql)
       scope