Merge branch '2.3' into 2.7

* 2.3:
  Fixed the wrong source name and the ja translation
  [SecurityBundle] disable the init:acl command if ACL is not used
  [DI] remove useless condition around unset

Author: fabpot

Container.php

@@ -305,10 +305,7 @@ public function get($id, $invalidBehavior = self::EXCEPTION_ON_INVALID_REFERENCE
                 $service = $this->$method();
             } catch (\Exception $e) {
                 unset($this->loading[$id]);
-
-                if (array_key_exists($id, $this->services)) {
-                    unset($this->services[$id]);
-                }
+                unset($this->services[$id]);
 
                 if ($e instanceof InactiveScopeException && self::EXCEPTION_ON_INVALID_REFERENCE !== $invalidBehavior) {
                     return;

Definition.php

@@ -495,9 +495,7 @@ public function hasTag($name)
      */
     public function clearTag($name)
     {
-        if (isset($this->tags[$name])) {
-            unset($this->tags[$name]);
-        }
+        unset($this->tags[$name]);
 
         return $this;
     }