Allow multiple networks per user

[rschuetzler]

With ZNC version 1.0 or greater, you can connect one user to multiple
networks using the password: "user/network:password". This patch
provides that functionality using the network slug as the network name.

[strugee]

@sshirokov can we get this merged? With the release of Debian Jessie this is hitting me pretty hard

[sshirokov]

@strugee I'm still running an ancient ZNC, so I can't quite test this easily. If you can tell me that this PR works correctly, I'll go ahead and merge this.

Sorry for the (super long) delay on this. 😿

[strugee]

@sshirokov yeah, I went ahead and patched it myself in my .emacs.d and it seems to be working great. That being said, I don't know if this is compatible with old ZNCs.

[strugee]

@sshirokov if you end up writing some code to handle older versions, I'm happy to test patches. Sadly, my ELisp-fu is not (yet) good enough to do it myself. :/

[rschuetzler]

It turns out this isn't really necessary. By putting the username as "name/slug", you can get the same effect without breaking backward compatibility with <1.0 versions of ZNC.

[strugee]

@rschuetzler or we could have a checkbox in Customize that lets you select your ZNC version...