xmpp: set body text to attachment URL in XEP-0066 OOB messages

[poVoq]

This would be a really nice improvement for the XMPP bridge.

There is an patch for it available here:

42wim@e168a89

@ubq323 would you be so kind to submit a PR for this here?

[poVoq]

@selfhoster1312 will this still be needed with your new http_upload support? Otherwise we can close this I guess?

[selfhoster1312]

No this will be fixed by #23

[poVoq]

Ok, then we can close this.