More Rails 4.0 upgrade changes

1. Compared existing branch with empty Rails 4.0 project and
    made changes as needed.
 2. Fix find/first warning.
 3. Fix sqlite timeout issue.
    -- config/database.yml
    -- spec/vulnerabilities/insecure_dor_spec.rb

spec/vulnerabilities/insecure_dor_spec.rb

@@ -16,7 +16,7 @@ feature 'insecure direct object reference' do
     pending(:if => verifying_fixed?) {
       page.status_code.should == 200
       page.response_headers['Content-Disposition'].should include('database.yml')
-      page.response_headers['Content-Length'].should == '709'
+      page.response_headers['Content-Length'].should == '712'
     }
   end
 
@@ -28,4 +28,4 @@ feature 'insecure direct object reference' do
 
     pending(:if => verifying_fixed?) { first('td').text.should == 'Jack Mannino' }
   end
-end
+end