* Use proper auth chain before checking parameters
* Refactor AnalyticsController
* Add a bunch of test and rewrite reactions counts with a single query
* Add tests for follows totals
* Use round and add more refactoring
* Add tests to group by day to fallback during refactoring
* Use group by to calculate comments count by day
* Use group by to calculate follows count by day
* Use group by to calculate reactions stats by day
* Use group by to calculate page_views stats by day
* Move calculations per day back in the cached block
* Add a few comments and a little bit of refactoring
* Add indexes (concurrently) for analytics
* Make tests more time robust
* Use a date range cache related to the requesting user or org
* Freezing time in UTC should help when tests are ran on time zones over the day line
* Remove explicit returns
* Page title is escaped, guard against that
* Move Analytics service spec in the proper place
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