The hosts breadcrumb currently uses the host id however in the url the name of the host is used when first visiting a host from the hosts index.

We should change the host breadcrumb to use the name of the host instead.

Steps to reproduce:

1. Visit hosts index.
2. Click on a Host; take note how the host name is in the url.
3. Click on hosts bread crumb and select a different host.
4. Take note of how the URL now contains the numerical ID of the host, not the name.