updated dependencies
fixed #159 and solve bc break
added upgrade md
Merge branch 'develop' of github.com:sulu-cmf/sulu-standard into feature/bc-break-extensions
adjusted navigation functions to match new names
Update UPGRADE.md
Update default.xml.dist
Update overview.xml.dist
removed categories
added categories from excerpt extension to twig template
Merge branch 'feature/bc-break-extensions' into develop
Merge branch 'develop' of github.com:sulu-cmf/sulu-standard into develop

Conflicts:
	composer.lock