Fixes #FS-5259 (Thanks to Nathan Neulinger for the patch)

FS-5257 --resolve you seem to be setting sip_secure_media on an inbound leg, this is not correct.  This patch should auto-correct that but also beware that the variable has changed to rtp_secure_media after this commit

Base64 in high definition!

fix cert dir specification when tls is not configured (note, you probably need to move your certs for wss after this commit)