Issues link in commit incorrect with custom domain (BB-4784)

When we use a issueID in our commit, the link to this commit is incorrect.

Ex.:
http://git.analyz-it.be/analyzit/acmsv4/issue/4/het-editeren-van-menupuntjes-zorgt-ervoor must be http://git.analyz-it.be/acmsv4/issue/4/het-editeren-van-menupuntjes-zorgt-ervoor