Retrieve analytics data for dashboard

Retrieves the pre processed data to display at countly dashboard.
It displays data in 3 ranges:
recent 30 days
recent 7 days
and today

Each time period provides dashboard data, some top metrics and period name

Dashboard data can contain total sessions, total users, new users, total time, average time and average request.
Each data contains:
total amount or sum of instances for this period,
change in percentage or NA if not available
trend, which can be u for up and d for down

Top contains some top metrics as platforms, resolutions, carriers and users with percentage amount