Merge pull request #594 from sulu-cmf/hotfix/sitemap-alternate

Fixed #588 sitemap alternate link bugs
added changelog
removed loading of ghost content
added command for copy localized snippets
fixed content mapper change state of snippets
updated changelog
Merge pull request #368 from sulu-cmf/feature/snippet-locale-copy-command

snippet locale copy command
fixes #544 phpcr value format change exception try to delete property and rewrite it
add changelog
fixed load deferred and default-value of overlay
block content type
Merge branch 'bugfix/list-locale' into develop
fix read of internal link after content type switch
change to repository exception to fix change from array to string content type
add fixme comment
fix merge conflict
added new husky lib
added admin build
fixed internal link security bug
updated changelog