v3.0.0-rc5 EL SILENCIO

• improved server robustness
• improved server efficiency
• improved support for selfsigned certs
• improved support for missed calls
• improved WebRTC issue-detection (NO PEERCON)
• improved special-case user messaging
• improved core clients (callee and caller)
• improved contacts mgmt (auto-store)
• improved client version mgmt
• improved client spinner (lower CPU use)
• improved logging clarity
• long list of bug fixes