Merge branch 'fix-commit-data-url-generation' into 'master'

Fix bug where commit data would not appear in some subdirectories

Fix issue where commit data would not show up in some subdirectories due to escaped slashes. For example:

https://gitlab.common-lisp.net/ecl/ecl/tree/develop/src/gc (now patched with fix)

The upgrade from Rails v4.1.2 to v4.1.9 (76aad9b7) caused slashes in a tree to be escaped automatically. Using a wildcard glob in the route prevents this behavior.

* Closes #1478, #1459
* Closes https://github.com/gitlabhq/gitlabhq/issues/9037

See merge request !581