only PRACK < 200 bad leg responses when EARLY_MEDIA, stop multiple calls to setRemoteDescription, handling=optional on custom data bodies
fixed sip.js handling of incoming renderbodies to support handling=optional
Use Session.C.STATUS_EARLY_MEDIA on both UAC and UAS
cleaning, fixed multiple calls to setRemoteDescription issue
ACKs that MUST have sdp now have sdp (affects non-answered forked legs); BYE's now blindly OKed (also to help settle non-answered forked legs)
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Stop UA timers from leaking to other tests