As a Firefox Retention team member, I would like to be able to display snippets to users based on their total Active Hours (derived from Active Ticks) in the previous 28 days in order to provide useful information to users based on how heavily they use Firefox.

activeHours
= activeTicks * (activeSeconds/ActiveTick) * (activeHours/activeSeconds)
= activeTicks * activeSecondsPerActiveTick / activeSecondsPerActiveHour

with:
activeSecondsPerActiveTick = 5.0
activeSecondsPerActiveHour = 60*60 = 3600

Acceptance Criteria:
- Snippets are only displayed to users based on the total of Active Hours (in the last 28 days) targeting used
-- Examples:
---1. Display snippet to users whose total Active Hours (based on Active Ticks) exceeded 28 hours in the previous 28 days
---2. Display snippet to users whose total Active Hours (based on Active Ticks) was less than 2 hours in the previous 28 days
---3. Display snippet to users whose total Active Hours (based on Active Ticks) was greater than 10 hours but less than 20 hours in the previous 28 days

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Old story: 
As a UITour consumer I will have access to the following properties on the result of Mozilla.UITour.getConfiguration("appinfo", …):

* Weeks (if < 3 months) since active session hours exceed x hours
(in other words: yes or no a user has exceeded x hours of active session hours in the last week)