Support No IRC link allowed in Release Notes

[Digitalr]

Well when releasing something and you want to include your irc channel in the release notes, it doesn't work.. It doesn't accept irc://irc.irchighway.net/example as a proper url.

Also, when creating several releases you've to use different links.. Which is silly if the link is a pack with several chapters in it.
And it is quite annoying as we can't release several chapters at once on MH either.