3499: groups/{user_uuid}/contents returns home project contents. closes #3514
3499: Update breadcrumbs. closes #3513
3499: Show home project at /projects/{user_uuid}. closes #3515
3499: Show Home at root of projects tree. closes #3517
3499: Merge branch 'master' into 3499-home-project
3499: arv-put collections in home project if no --project-uuid specified.
3499: Improve Python SDK's ability to read apiserver's config files.

Use a hardcoded secret in the default "test" configuration, rather
than generating a random string with erb. Otherwise, the Python test
suite can't figure out what blob signing key the test server actually
ends up using.
3499: Fix Python SDK tests to accept signed blob locators.
3499: Reconcile Python tests to new arv-put "home project" behavior.
3499: Update arv-put usage message to reflect new behavior.
3499: Merge branch 'master' into 3499-home-project
3499: Do not show "Move" and "Delete" buttons on Home project.
3499: Show "Home" in "My projects" panel on dashboard.
3499: Do not show "Sharing" tab on Home project.
3499: Do not show Home in breadcrumbs when viewing dashboard page.
3499: Remove "not in any project" warning.
Merge branch '3499-home-project' closes #3499
Update tests and user setup methods. refs #3525