N°2435.1 Portal: Split portal composer.json in 2

- Autoloader for portal files in the itop-portal-base module
- Dependencies moved to root composer.json
- Add autoloader for /core and /application content

lib/symfony/framework-bundle/Tests/Fixtures/TemplatePathsCache/templates.php

@@ -0,0 +1,3 @@
+<?php return array (
+  'bundle:controller:name.format.engine' => __DIR__.'/../path/to/template.html.twig',
+);