Show a link to the MAAS server.

When the provider is MAAS, display a link
to the MAAS management interface in the
header.

Also implemented the EnvironmentGet call
in sandbox mode.
Merge pull request #620 from frankban/maas-server-link

Show a link to the MAAS server.

When the provider is MAAS, display a link
to the MAAS management interface in the
header.

Also implemented the EnvironmentGet call
in sandbox mode.
Click on a service name to open the inspector.
Merge pull request #622 from kadams54/added-services-link

Click on a service name to open the inspector.
Add environmnet counts to added services bar.

Specifically, counts for units, services, and machines.
Merge pull request #621 from kadams54/added-services-count-section

Add environment counts to added services bar.

Specifically, counts for units, services, and machines.