Import the database as the `git` user

This ensures that all tables created during the import belong to `git`.
If you import as a different user, such as the `postgres` superuser, you
may encounter issues where the GitLab database user cannot access tables
in gitlabhq_production, _even if_ `git` is the owner of
gitlabhq_production at the time of import.
Use one word per line in Gitlab::Blacklist
Add 'unsubscribes' to the paths blacklist

GitLab EE has a /unsubscribes/ route.
Always set the origin remote in satellite actions

This prevents issues with satellites containing outdated origin remotes
after administrators move the git repositories directory.
Merge branch 'import_postgres_user' into 'master'

Import the database as the `git` user

See merge request !762
Merge branch 'always_set_satellite_origin' into 'master'

Always set satellite origin

See merge request !1036
Merge branch 'blacklist/unsubscribes' into 'master'

Add 'unsubscribes' to the paths blacklist

This is to prevent issues with the admin email feature in GitLab EE.

See merge request !1034