FEC-2479 #comment Preserve adTagUrl encoding #time 4h

Doubleclick overload data in a key=value format on their URLs.
The data is overloaded on the query string and is escaped!

When player pulls configuration data it unescapes the configuration value in order to evaluate it, and this unescape opens the escaping of the overloaded data, in a way that it looks like a regular part of the query string.

Player needs to iterate over each part of the query string - unescape it, evaluate it, and then escape it back.