Retrieve app versions data of the app

Retrieves the raw device details data of the app (including app version), the object is divided by time metrics, like year, month, date and can be processed by Countly JavaScript libraries

n - new app version instances

t - total app version instances

u - unique app version instances

Note that app version names are modified per MongoDB inability to use dots in key names, so all dots in app version are replaces by colon ":"