[omega] Don't check the fingerprint of the SSL certificats with a fixed list, but use OpenSSL to check if the certificat is valid.

several <value/> elements.

new account registration wizard that follow XEP 77 better. fixes #2700 too (advanced options available while creation an account)

Fix a bug with changing status in groupchats. Always print "You are now %s" in groupchats, even if you change from "action menu".

introduce a FakeDataForm class that draws a table from dict {entry: value} and use it for service registration

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M    src/groupchat_control.py

in tabs.

handle correctly vcards in groupchats : ask them to real jid if we know it, but considere it arrive from fake jid. Fixes #3172, #3173