Display available service integrations

Display integrations that are available for the current service.
These integrations have 3 potential display states:

• Integration is not deployed: List as grey with no + or - clicking this brings up the provision modal for that service.
• Integration is deployed and not integrated: Black with a +.
• Integration is deployed and integrated: blue with a -.

Clicking the + and - buttons are not covered in this ticket.

Integrations are shown in the serviceclass meta data. We use this data already in the CLI https://github.com/aerogear/mobile-cli/blob/master/pkg/cmd/services.go#L123