Merge branch '3.2'

* 3.2:
  [Console] Do not duplicate Helper::strlen() code
  [FrameworkBundle] Adding the extension XML
  [Form] Minor: Fix comment in ChoiceType
  [FrameworkBundle] AbstractConfigCommand: do not try registering bundles twice
  fixed CS
  fixed CS
  [DI] Fix PhpDumper blank lines around namespace
  fixed CS
  [Workflow] fix use directives
  [Workflow] Move twig extension registration to twig bundle
  Filesystem: annotate the one network test with a "network" group.
  [DependencyInjection] Don't store default deprecation template in every service definition instance

Author: fabpot

Tests/Data/Provider/AbstractCurrencyDataProviderTest.php

@@ -676,15 +676,15 @@ function ($currency) { return array($currency); },
      */
     public function testGetFractionDigits($currency)
     {
-        $this->assertTrue(is_numeric($this->dataProvider->getFractionDigits($currency)));
+        $this->assertInternalType('numeric', $this->dataProvider->getFractionDigits($currency));
     }
 
     /**
      * @dataProvider provideCurrencies
      */
     public function testGetRoundingIncrement($currency)
     {
-        $this->assertTrue(is_numeric($this->dataProvider->getRoundingIncrement($currency)));
+        $this->assertInternalType('numeric', $this->dataProvider->getRoundingIncrement($currency));
     }
 
     public function provideCurrenciesWithNumericEquivalent()