Summary: Basic support for adding comments. Missing a lot of frills. Uses new comment/transaction UI.
Test Plan:
Added some comments. Tried to add an empty comment.
Some comments:
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No text provided:
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Reviewers: btrahan, chad
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T2097
Differential Revision: https://secure.phabricator.com/D3834
