Retrieve device details data of the app

Retrieves the raw device details data of the app segmented by display resolutions, display densities, os, os versions and app versions. The object is divided by time metrics, like year, month, date and can be processed by Countly JavaScript libraries

n - new instances

t - total instances

u - unique instances

Due to MongoDB inability to use key names that contain dots, all dots are replace by colons ":". So 1.2 becomes 1:2.

To differentiate platform versions, each platform version is formed by using first letter of platform name and version, so Windows 8.1 becomes w8:1