Summary:
- added a new config class for representing the kind of repetition a rule has
(once, every time, first time only)
- added an email action to herald rules for differential to allow someone to get
an email but only the first one
- changed the herald rule ui to allow a user to pick the amount of repetition
Test Plan:
created a test rule and ran it over and over
Reviewed By: epriestley
Reviewers: epriestley, tuomaspelkonen
CC: aran, epriestley, gc3
Revert Plan:
Tags:
- begin *PUBLIC* platform impact section -
Bugzilla: #
- end platform impact -
Differential Revision: 357
