Add Bungeecord support!

Required: https://github.com/CanaryModTeam/CanaryLib/pull/26

Allows CanaryMod to fully support BungeeCord IP/UUID forwarding. To enable that feature, the server need to be in offline mode and bungeecord flag in server.cfg set to true.

Modified lines:
https://github.com/CanaryModTeam/CanaryMod/pull/60/files#diff-aeaed513c0526bdc5dfd456bf8ae87aaR49
https://github.com/CanaryModTeam/CanaryMod/pull/60/files#diff-5c82a366c14cff37ffff99ed3d8fa36bR13
https://github.com/CanaryModTeam/CanaryMod/pull/60/files#diff-5c82a366c14cff37ffff99ed3d8fa36bR21
https://github.com/CanaryModTeam/CanaryMod/pull/60/files#diff-8172ca9a51afaa4d72c975d84464182aR48
https://github.com/CanaryModTeam/CanaryMod/pull/60/files#diff-a7bdc9e98ca61de3f2d9d3a799bd1eedR180