added support for http and https interception on Android

CAVEAT -- untested at present, I've only been able to create apps using PhoneGap Build, and I've had to submit the fork as a separate plugin temporarily, so that I will hopefully be able to confirm this change functions properly if it is accepted.  Not sure exactly what it will do with empty values for HTTP and HTTPS (e.g. will empty host match none, or match all?) so not sure it's safe to auto-merge just yet.