Support for sharing links directly to gitspeak

[michaelo]

A function to easily share links directly to gitspeak would be convenient.

(I've already mentioned this on the Slack-channel, but adds it here anyhow to track any progress.)

E.g. in addition to have "Open in GitHub.com" there might by a "Copy GitSpeak link" (or hidden under the "More items"-menu). Perhaps also support doing ctrl/cmd+c while inside the issue in view-mode would put that URL in the clipboard.

Could probably be solved by utilizing gitspeak as protocol. The URL might otherwise be exactly as the github-ones:

• https://github.com/gitspeak/community/issues/49
• gitspeak://github.com/gitspeak/community/issues/49

[perborgen]

Thanks for this one, it's been added to our internal backlog.