R1:2497e5b5ed07

Releeph (Phabricator part)

Summary: A copy of the Releeph release tool.

Test Plan: Generally, click everything at least once.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin, AnhNhan

Maniphest Tasks: T2094

Differential Revision: https://secure.phabricator.com/D4932