message to show "sent" instead of 100% just before leaving view

[tomholub]

I agree with Roma here. I'll file another issue for him to improve it.

Originally posted by @tomholub in #1126 (comment)

[tomholub]

I presume, at the moment it's at 100%, we have sent all data but haven't received any http status yet?

Than maybe it should show simply Sending. If we haven't received response from Gmail yet, then there is still a chance that Gmail may respond with a 4xx or 5xx error, so it would be weird to see Sent and then an error modal.

So encrypting -> uploading x% -> Sending -> inbox -> toast ?