Broken URL in activity block

Created by: alesculek

When a link has some special character(which is allowed by jenkins) then the link in the activity block is broken.

Result html href is (bad):

http://jenkins.bisnode.cz:8181/job/dev-int.admin%20DEPLOY%20master%20to%20dev-int%20(admin.dev-int.bisnode.cz

Instead of this (expected):

http://jenkins.bisnode.cz:8181/job/dev-int.admin%20DEPLOY%20master%20to%20dev-int%20(admin.dev-int.bisnode.cz)/44/

Affected: Firefox and desktop client on Ubuntu. Both same result. Maybe related to #661

Thanks.

Created by: trevorah

Looks like this is an issue with our markdown parser. Here is where we construct the message: https://github.com/gitterHQ/services/blob/master/lib/jenkins/index.js#L46

Parenthesis in urls are the worst.

Closing in favor of https://github.com/gitterHQ/gitter/issues/716