Support for mutual SSL (on Ajax calls)

In some situations, two-factor authentication is required, and client certificates (a X.509 certificate with a 1.3.6.1.5.5.7.3.2 enhanced key usage) are a popular choice as a first factor. With mutual SSL, the client verifies the server's identity (server authentication) and the server verifies the client's identity (client authentication). Unfortunately, Cordova does not support mutual SSL.

This issue is relate to CB-2669, but not only for iOS