Fixes grack authentification under relative_url_root

王权利请求将github/fork/atuleu/issue-3153合并到master

Created by: atuleu

grack fails under non relative_url_root . I tried to fix by stripping relative root if its is set.

I tried to find spec / features for git smart http acces but did not found any.

refs #1228 (closed) refs #3153 (closed)

合并请求报告