don't try to configure a room for which we are not admin. See #7422
fix invite contact list. Fixes #7422
correctly detect that farstream is not available. Fixes #7420
ignore wrong incoming stanza. Fixes #7416
remove our own list of available spelling language. gtkspell already adds one. Fixes #7408
[Darlan] Update Hebrew translation
print correctly when we correct a /me message. Fixes #7400
[Darlan] Update Copiright