Frontend for namespace selection

1. Sorry for the size, but this PR was all-in or nothing
2. The mechanics for namespace is that user selects it via the dropdown
   and the selection goes through all pages, but has effect on display
   only on list pages.
3. The selector is now ugly. I'll style and improve wording later.

Localization of Workloads, ServiceList and -Detail

Fix issues that error massages of exceed max length are not shown

https://greenkeeper.io/

Localization of the DeployLabels and PortMappings

Both of those sections are on the deploy from settings page.

Status icons for Pods visible on list and resources pages

Localization of the base deploy page, the environment variables section
and the deployment file upload section.

Add frontend for Daemon Set

https://greenkeeper.io/

Fix installation guide

Localization of the DeployFromSettings page

Backend for namespace selection

Localization of 2 resource creation dialogs

https://greenkeeper.io/

'Image Pull Secret' create dialog and 'Namespace' create dialog on the
deploy page.

Now default behavior is to omit kube-system namespace when listing all.
In a future PR I'll add namespace selector.

Now all list pages can be optionally filtered by (multiple) namespaces.

Try it, e.g.,: http://localhost:9090/api/v1/workload/default

Redesign of expose service externally

Deployment details frontend

Deployment detail backend