Configuration: prompt delete data on remove disk

Resolves utmapp#103

UI: show message if try to start a new VM

qemu: implement bulletproof JIT

Resolves utmapp#31

github: build fakesigned IPA

We use ldid to fakesign the IPA before uploading it for release. This means
jailbroken users can install the IPA directly and other users can re-sign
the IPA.

Resolves utmapp#36

github: build IPA on release