gitlab ext svc: allow multiple path components in project name

do not return 401 on /sign-in?returnTo=X

LSIF: Remove orphaned word from old page. (sourcegraph#7312)

LSIF: Fallback to original values when project root cannot be resolved (

sourcegraph#7264)

Fix e2e add external service (sourcegraph#7268)

* e2e: fix external services redirect bug

* e2e: fix external service redirect bug

* Update shared/src/e2e/driver.ts

CHANGELOG: 3.12 stub