Deployment settings wiring to models

This makes the wizard work
Merge pull request #22 from jtomasek/model_integration

Deployment settings wiring to models
Deployment page and link + search
Merge pull request #27 from knowncitizen/deployments_page

Deployment page and link + search
Fixes the new deployment link, fixes deployments listing condition
Merge pull request #29 from jtomasek/deployments_new_link_fix

Fixes the new deployment link, fixes deployments listing condition
Delete mechanism for deployments utilizing Foreman action button.

Destroy method

Success alert

Engine fix for extensions

Hostgroup child delete.

Fix delete cascade
Merge pull request #30 from knowncitizen/delete_deployment_ui

Delete deployment UI