Shared Channels Break Everything

[dill0wn]

Repro steps:

Join a workspace that has at least one shared channel.

There are actually two different errors depending on whether you're in the "owner's" workspace or not. The above is if you are in the "owner's" workspace.

From a share-ee's workspace:

[dill0wn]

submitted pull request #109

[duynguyenhoang]

Fixed in #109