RFR: 121: Send notification emails when new tags are created

[Robin Westberg]

Hi all,

Please review this change that implements sending of notification emails when new tags are created.

Best regards,
Robin

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Commits:
 - 02eebb1e: Add support for sending email notifications when new tags are created

Changes: https://git.openjdk.java.net/skara/pull/195/files
 Webrev: https://webrevs.openjdk.java.net/skara/195/webrev.00
  Issue: https://bugs.openjdk.java.net/browse/SKARA-121
  Stats: 143 lines in 3 files changed: 134 ins; 7 del; 2 mod
  Patch: https://git.openjdk.java.net/skara/pull/195.diff
  Fetch: git fetch https://git.openjdk.java.net/skara pull/195/head:pull/195

PR: https://git.openjdk.java.net/skara/pull/195