Disabled client certificate

As suggested in
https://github.com/mitmproxy/netlib/commit/7f0aa415e1ab95ed6b27a760cc9aa8ff4ee85080
Should fix compatibility with Android 4.2+
Bumped up version to 1.3.0.0
Added test build 1.3.0.0_alpha

- New overcomplicated interface
- Disabled client certificate request in HTTPS listener to fix Android
4.2 compatibility (fingers crossed)
- Added ARP spoofing (placeholder for now)
- Added IP address select dialog
- Added TCP listener (back by popular demand)
- Added option to capture contact sync (back by popular demand)