* feat(plugins-catalog): only allow admins to access plugins catalog routes
* add backend check
* fix(plugins-catalog): update route role access to include server admins
Co-authored-by: Will Browne <will.browne@grafana.com>
* Navigation Bar: Remove plugins link under Server Admin
* Modify frontend to handle admin plugins as just plugins
* update assets and documentation mentioned path
* Fix copy to remove redundant text