MERGE: Merge branch '5.3' into 7.0

# Conflicts:
#	Neos.Media.Browser/Resources/Private/Translations/ar/Main.xlf
#	Neos.Neos/Resources/Private/Translations/ar/Modules.xlf
#	Neos.Neos/Resources/Private/Translations/cs/Modules.xlf
#	Neos.Neos/Resources/Private/Translations/de/Modules.xlf
#	Neos.Neos/Resources/Private/Translations/lv/Modules.xlf
#	Neos.Neos/Resources/Private/Translations/pl/Modules.xlf
#	Neos.Neos/Resources/Private/Translations/pt/Modules.xlf
#	Neos.Neos/Resources/Private/Translations/ru/Modules.xlf
#	Neos.Neos/Resources/Private/Translations/sr/Modules.xlf
#	Neos.Neos/Resources/Private/Translations/uk/Modules.xlf