There was an issue where the path passed to the gr-list-view was not
updated when the detail list switched from branches to tags or vice
versa. This is fixed by passing the detailType as a parameter in the
_getPath function, so that it gets updated when the detailType is
updated.
Change-Id: I937c9aea977f2b1028a2fa5f143b71add6b59b4c