Merge branch '2.8' into 3.1

* 2.8:
  [Console] Review Application docblocks
  bumped Symfony version to 2.8.16
  updated VERSION for 2.8.15
  updated CHANGELOG for 2.8.15
  bumped Symfony version to 2.7.23
  updated VERSION for 2.7.22
  update CONTRIBUTORS for 2.7.22
  updated CHANGELOG for 2.7.22
  Update PHP CS Fixer config file

Author: fabpot

Application.php

@@ -99,8 +99,6 @@ public function setDispatcher(EventDispatcherInterface $dispatcher)
      * @param OutputInterface $output An Output instance
      *
      * @return int 0 if everything went fine, or an error code
-     *
-     * @throws \Exception When doRun returns Exception
      */
     public function run(InputInterface $input = null, OutputInterface $output = null)
     {
@@ -404,7 +402,7 @@ public function add(Command $command)
      *
      * @return Command A Command object
      *
-     * @throws CommandNotFoundException When command name given does not exist
+     * @throws CommandNotFoundException When given command name does not exist
      */
     public function get($name)
     {
@@ -805,8 +803,6 @@ protected function configureIO(InputInterface $input, OutputInterface $output)
      * @param OutputInterface $output  An Output instance
      *
      * @return int 0 if everything went fine, or an error code
-     *
-     * @throws \Exception when the command being run threw an exception
      */
     protected function doRunCommand(Command $command, InputInterface $input, OutputInterface $output)
     {