minor #386 Minor performance optimizations (javiereguiluz)

This PR was squashed before being merged into the master branch (closes #386).

Discussion
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Minor performance optimizations

* The purpose of the Symfony Demo is not to build a fast Symfony app, but to showcase how to develop Symfony apps. However, we should optimize the things that make sense and not complicate the application much.
* We're not sending emails, so we can stop loading the Swift bundle.
* We're promoting Assetic less and less ... so we could stop loading Assetic bundle too. Sadly we can't remove Assetic entirely yet because there is no clear alternative (maybe stop using SCSS and just use some simple CSS and JS files?).

Commits
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e2264b0 Minor performance optimizations

Author: javiereguiluz

app/AppKernel.php

@@ -16,13 +16,13 @@ public function registerBundles()
             new Symfony\Bundle\SecurityBundle\SecurityBundle(),
             new Symfony\Bundle\TwigBundle\TwigBundle(),
             new Symfony\Bundle\MonologBundle\MonologBundle(),
-            new Symfony\Bundle\SwiftmailerBundle\SwiftmailerBundle(),
             new Doctrine\Bundle\DoctrineBundle\DoctrineBundle(),
             new Sensio\Bundle\FrameworkExtraBundle\SensioFrameworkExtraBundle(),
             new WhiteOctober\PagerfantaBundle\WhiteOctoberPagerfantaBundle(),
             new CodeExplorerBundle\CodeExplorerBundle(),
             new AppBundle\AppBundle(),
-            new Doctrine\Bundle\FixturesBundle\DoctrineFixturesBundle(),
+            // uncomment the following line if your application sends emails
+            // new Symfony\Bundle\SwiftmailerBundle\SwiftmailerBundle(),
         ];
 
         // Some bundles are only used while developing the application or during
@@ -34,6 +34,7 @@ public function registerBundles()
             $bundles[] = new Symfony\Bundle\WebProfilerBundle\WebProfilerBundle();
             $bundles[] = new Sensio\Bundle\DistributionBundle\SensioDistributionBundle();
             $bundles[] = new Sensio\Bundle\GeneratorBundle\SensioGeneratorBundle();
+            $bundles[] = new Doctrine\Bundle\FixturesBundle\DoctrineFixturesBundle();
         }
 
         return $bundles;

app/config/config.yml

@@ -74,9 +74,9 @@ doctrine:
         auto_mapping: true
 
 # Swiftmailer Configuration (used to send emails)
-swiftmailer:
-    transport: "%mailer_transport%"
-    host:      "%mailer_host%"
-    username:  "%mailer_user%"
-    password:  "%mailer_password%"
-    spool:     { type: memory }
+# swiftmailer:
+#     transport: "%mailer_transport%"
+#     host:      "%mailer_host%"
+#     username:  "%mailer_user%"
+#     password:  "%mailer_password%"
+#     spool:     { type: memory }

app/config/config_test.yml

@@ -12,8 +12,8 @@ web_profiler:
     toolbar: false
     intercept_redirects: false
 
-swiftmailer:
-    disable_delivery: true
+# swiftmailer:
+#     disable_delivery: true
 
 # It's recommended to use a separate database for tests. This allows to have a
 # fixed and known set of data fixtures, it simplifies the code of tests and it