Add integrations for Quantcast and GA Native SDKs

In a Cordova/PhoneGap app that uses analytics.js, it is preferred to
use the native analytics SDKs instead of the web ones. This commit adds
integrations for two of the Cordova plugins for Quantcast and Google
Analytics’ native SDKs.

By tying into analytics.js, Cordova/PhoneGap apps can benefit from the
single consistent JS interface to talk to many different analytics
providers.
Merge branch 'native-integrations' into ct-min
Fix bad merge