[zanata/zanata-scripts] 9d48ff: feat(upload): print error when tag does not exist;

[GitHub]

  Branch: refs/heads/ZNTA-1165-github-upload
  Home:   https://github.com/zanata/zanata-scripts
  Commit: 9d48ff4a813c665c568378a61a59c6550ff94a1b
      https://github.com/zanata/zanata-scripts/commit/9d48ff4a813c665c568378a61a59c6550ff94a1b
  Author: Ding-Yi Chen <dchen at redhat.com>
  Date:   2016-08-05 (Fri, 05 Aug 2016)

  Changed paths:
    M ZanataScriptsCommon.pm
    M zanata-github-upload
    M zanata-package-fedora

  Log Message:
  -----------
  feat(upload): print error when tag does not exist;
fix accorrding to the review