[Integrated] RFR: git-pr: publish later and polish error messages

[Erik Helin]

Changeset: 9a4e98b5
Author:    Erik Helin <ehelin at openjdk.org>
Date:      2020-02-21 13:02:19 +0000
URL:       https://git.openjdk.java.net/skara/commit/9a4e98b5

git-pr: publish later and polish error messages

Reviewed-by: rwestberg

! cli/src/main/java/org/openjdk/skara/cli/pr/GitPrCreate.java