show all namespaces by default
show all namespaces by default

There is nothing special about the "default" namespace, and selecting
it by default means we only show a partial view of the system, which
is hard to spot, especially for novice users.

kinvolk/scope,kinvolk/scope,alban/scope,kinvolk/scope,alban/scope,kinvolk/scope,alban/scope,alban/scope,weaveworks/scope,alban/scope,weaveworks/scope,kinvolk/scope,alban/scope,weaveworks/scope,kinvolk/scope,weaveworks/scope,weaveworks/scope,weaveworks/scope