Update login view. Adjust namespace selector and settings view behavior when user has no privileges.

* feat: migrate replication controller detail

* chore: fix format issues

* Add delay for synchronizer restart not to flood output with logs

* Format code

Contents based on github teams that have write or admin
access to this repo, plus the assumption that sig-ui owns
this repo

- When determining the path of the localized frontend assets, do
not look in current working directory, use the directory of the
executable. (Resolves symlinks to determine the directory of
the executable.)

* Update about page

* Fix tests

* Add option to access settings page when not logged in

* Add documentation

* Update license headers

* Fix tests