Merge branch '4.4' into 5.2

* 4.4:
  Update events.rst
  Update kernel.rst
  Update debug.rst

Author: OskarStark

reference/configuration/debug.rst

@@ -67,9 +67,10 @@ dump_destination
 
 Configures the output destination of the dumps.
 
-By default, the dumps are shown in the toolbar. Since this is not always
-possible (e.g. when working on a JSON API), you can have an alternate output
-destination for dumps. Typically, you would set this to ``php://stderr``:
+By default, dumps are shown in the WebDebugToolbar when returning HTML.
+Since this is not always possible (e.g. when working on a JSON API),
+you can have an alternate output destination for dumps.
+Typically, you would set this to ``php://stderr``:
 
 .. configuration-block::
 

reference/configuration/kernel.rst

@@ -5,7 +5,7 @@ Configuring in the Kernel
 =========================
 
 Some configuration can be done on the kernel class itself (located by default at
-``src/Kernel.php``). You can do this by overriding specific methods in
+``src/Kernel.php``). You can do this by overriding specific methods of
 the parent :class:`Symfony\\Component\\HttpKernel\\Kernel` class.
 
 Configuration

reference/events.rst

@@ -1,10 +1,11 @@
 Built-in Symfony Events
 =======================
 
-During the handling of an HTTP request, the Symfony framework (or any
+The Symfony framework is an HTTP Request-Response one.
+During the handling of an HTTP request, the framework (or any
 application using the :doc:`HttpKernel component </components/http_kernel>`)
 dispatches some :doc:`events </event_dispatcher>` which you can use to modify
-how the request is handled.
+how the request is handled and how the response is returned.
 
 Kernel Events
 -------------