server/home: create home workspace with final URL on ~ access

[sttts]

Backport of #1530

[openshift-merge-robot]

@sttts: PR needs rebase.

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[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

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[openshift-ci]

@sttts: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/e2e	51a3e02	link	true	/test e2e
ci/prow/test	51a3e02	link	true	/test test
ci/prow/boilerplate	51a3e02	link	true	/test boilerplate
ci/prow/imports	51a3e02	link	true	/test imports
ci/prow/images	51a3e02	link	true	/test images
ci/prow/codegen	51a3e02	link	true	/test codegen
ci/prow/e2e-multiple-runs	51a3e02	link	true	/test e2e-multiple-runs
ci/prow/deps	51a3e02	link	true	/test deps
ci/prow/lint	51a3e02	link	true	/test lint

Full PR test history. Your PR dashboard.

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[sttts]

/retest

[ncdc]

/lgtm

[sttts]

Replaced with #1537