Update localization files for Italian, Spanish and German

[lfcnassif]

I asked our kind foreign collaborators for help. The Italian translation was already sent. If we get the others soon, we can include #1651 into 4.1.3 release.

[lfcnassif]

Just got the Spanish one. We need just the German one now.

[lfcnassif]

We need just the German one now.

@mobab-th do you have available time to help us? Thank you very much in advance.

[lfcnassif]

We just need to translate strings below for now:

WhatsAppReport.Forwarded=Forwarded
WhatsAppReport.BlockedContact=You blocked this contact. Tap to unblock.
WhatsAppReport.UnblockedContact=You unblocked this contact.
WhatsAppReport.BusinessToStandard=This business account has now registered as a standard account. Tap for more info.
WhatsAppReport.ChatBusiness=This chat is with a business account. Tap for more info.
WhatsAppReport.ChatEncrypted=Messages and calls are end-to-end encrypted. No one outside of this chat, not even WhatsApp, can read or listen to them. Tap to learn more.
WhatsAppReport.UnavailableVoiceCall=Unavailable voice call
WhatsAppReport.UnavailableVideoCall=Unavailable video call
WhatsAppReport.MessageDeleted=Message deleted
WhatsAppReport.MessageDeletedByAdmin=Message deleted by admin
WhatsAppReport.MessageDeletedRecovered=Recovered deleted message
WhatsAppReport.Owner=Owner

[lfcnassif]

Got the German one, thank you @mobab-th! I'll proceed in the afternoon.