used HTML5 meta charset tag and removed hardcoded ones
used HTML5 meta charset tag and removed hardcoded ones

Conflicts:
	src/Symfony/Bundle/SecurityBundle/Tests/Functional/app/Resources/views/base.html.twig
	src/Symfony/Bundle/TwigBundle/Resources/views/Exception/error.html.twig
	src/Symfony/Bundle/TwigBundle/Resources/views/layout.html.twig

symfony/web-profiler-bundle,symfony/web-profiler-bundle