Merge branch '2.6' into 2.7

* 2.6:
  Php Inspections (EA Extended): squash all PR-13813 commits
  replaced the last remaining is_integer() call
  [2.3] [Config] [Console] [DependencyInjection] [DomCrawler] [Form] [HttpKernel] [PropertyAccess] [Security] [Translation] [Yaml] static code analysis, code cleanup
  [FrameworkBundle] simplify dep declaration
  [VarDumper] Fix "next element is already occupied"
  [Validator] Added missing galician (gl) translations
  [PropertyAccess] stop overwriting once a reference is reached (3rd)
  [OptionsResolver] Remove Unused Variable from Foreach Cycles
  [travis] Tests Security sub-components
  [Twig] bootstrap_3_layout.html.twig is usable as a trait
  [travis] Tests Security sub-components
  CS fixes
  [TwigBridge] Bootstrap Layout - Fix the label of checkbox cannot be empty
  [travis] test with php nightly

Conflicts:
	.travis.yml
	src/Symfony/Bundle/FrameworkBundle/composer.json
	src/Symfony/Component/Security/Http/Tests/Firewall/ExceptionListenerTest.php
	src/Symfony/Component/Security/Http/Tests/Firewall/RememberMeListenerTest.php

Author: fabpot

OptionsResolver.php

@@ -258,7 +258,7 @@ public function setRequired($optionNames)
             throw new AccessException('Options cannot be made required from a lazy option or normalizer.');
         }
 
-        foreach ((array) $optionNames as $key => $option) {
+        foreach ((array) $optionNames as $option) {
             $this->defined[$option] = true;
             $this->required[$option] = true;
         }
@@ -339,7 +339,7 @@ public function setDefined($optionNames)
             throw new AccessException('Options cannot be defined from a lazy option or normalizer.');
         }
 
-        foreach ((array) $optionNames as $key => $option) {
+        foreach ((array) $optionNames as $option) {
             $this->defined[$option] = true;
         }
 
@@ -686,14 +686,8 @@ public function remove($optionNames)
         }
 
         foreach ((array) $optionNames as $option) {
-            unset($this->defined[$option]);
-            unset($this->defaults[$option]);
-            unset($this->required[$option]);
-            unset($this->resolved[$option]);
-            unset($this->lazy[$option]);
-            unset($this->normalizers[$option]);
-            unset($this->allowedTypes[$option]);
-            unset($this->allowedValues[$option]);
+            unset($this->defined[$option], $this->defaults[$option], $this->required[$option], $this->resolved[$option]);
+            unset($this->lazy[$option], $this->normalizers[$option], $this->allowedTypes[$option], $this->allowedValues[$option]);
         }
 
         return $this;