Updated Italian translation
Merge branch 'master' of https://github.com/be-lca/olca-translation-files into be-lca-master

Conflicts:
	app-messages/messages.properties
	app-messages/messages_bg.properties
	app-messages/messages_de.properties
	app-messages/messages_es.properties
	app-messages/messages_fr.properties
	app-messages/messages_it.properties
	app-messages/messages_zh.properties
	bundle-messages/bundle.properties
	bundle-messages/bundle_bg.properties
	bundle-messages/bundle_de.properties
	bundle-messages/bundle_es.properties
	bundle-messages/bundle_fr.properties
	bundle-messages/bundle_it.properties
	bundle-messages/bundle_zh.properties
Merge branch 'be-lca-master'