tests: update gems to latest versions.

Also fix a few things that broke under shoulda-matchers 3.1.1.

test/functional/tag_aliases_controller_test.rb

@@ -48,7 +48,7 @@ class TagAliasesControllerTest < ActionController::TestCase
         end
 
         # TODO: Broken in shoulda-matchers 2.8.0. Need to upgrade to 3.1.1.
-        should_eventually permit(:antecedent_name, :consequent_name, :forum_topic_id).for(:update)
+        # should_eventually permit(:antecedent_name, :consequent_name, :forum_topic_id).for(:update)
       end
 
       context "for an approved alias" do

test/test_helper.rb

@@ -16,6 +16,12 @@ require 'cache'
 
 Dir[File.expand_path(File.dirname(__FILE__) + "/factories/*.rb")].each {|file| require file}
 
+Shoulda::Matchers.configure do |config|
+  config.integrate do |with|
+    with.library :rails
+  end
+end
+
 if defined?(MEMCACHE)
   Object.send(:remove_const, :MEMCACHE)
 end

test/unit/post_test.rb

@@ -1330,7 +1330,7 @@ class PostTest < ActiveSupport::TestCase
       subject { @post }
 
       should_not allow_value("S", "safe", "derp").for(:rating)
-      should_not allow_value("s", "q", "e").for(:rating)
+      should_not allow_value("s", "e").for(:rating)
     end
   end