Merge branch '4.4' into 5.0

* 4.4:
  Update testing.rst
  Update database.rst
  Update upload_file.rst
  Update sessions.rst

Author: javiereguiluz

components/http_foundation/sessions.rst

@@ -151,6 +151,9 @@ the following API which is intended mainly for internal purposes:
 :method:`Symfony\\Component\\HttpFoundation\\Session\\SessionBagInterface::getName`
     Returns the name of the session bag.
 
+:method:`Symfony\\Component\\HttpFoundation\\Session\\SessionBagInterface::clear`
+    Clears out data from bag.
+
 .. _attribute-bag-interface:
 
 Attributes

controller/upload_file.rst

@@ -309,7 +309,7 @@ Then, define a service for this class:
                 https://symfony.com/schema/dic/services/services-1.0.xsd">
             <!-- ... -->
 
-            <service id="App\FileUploader">
+            <service id="App\Service\FileUploader">
                 <argument>%brochures_directory%</argument>
             </service>
         </container>

session/database.rst

@@ -204,7 +204,7 @@ first register a new handler service with your database credentials:
 
             <services>
                 <service id="Symfony\Component\HttpFoundation\Session\Storage\Handler\PdoSessionHandler" public="false">
-                    <argument>env(DATABASE_URL)</argument>
+                    <argument>%env(DATABASE_URL)%</argument>
 
                     <!-- you can also use PDO configuration, but requires passing two arguments: -->
                     <!-- <argument>mysql:dbname=mydatabase, host=myhost</argument>
@@ -296,7 +296,7 @@ passed to the ``PdoSessionHandler`` service:
 
             <services>
                 <service id="Symfony\Component\HttpFoundation\Session\Storage\Handler\PdoSessionHandler" public="false">
-                    <argument>env(DATABASE_URL)</argument>
+                    <argument>%env(DATABASE_URL)%</argument>
                     <argument type="collection">
                         <argument key="db_table">customer_session</argument>
                         <argument key="db_id_col">guid</argument>

testing.rst

@@ -100,7 +100,7 @@ of your application::
 .. note::
 
     By convention, the ``tests/`` directory should replicate the directory
-    of your bundle for unit tests. So, if you're testing a class in the
+    of your application for unit tests. So, if you're testing a class in the
     ``src/Util/`` directory, put the test in the ``tests/Util/``
     directory.