Dashboard only shows Exclamation mark “The Integration is out of date, promote!” If there is traffic

• Dashboard caches the service widget and doesn't take `.has_traffic?` into account
• Proxy config affecting changes do not touch the proxy
• Exclamation mark will not show until the cache expires

// dev notes

touching proxy here should do the trick https://github.com/3scale/porta/blob/master/app/models/proxy_config_affecting_change.rb#L4
Fix: simple refactoring of the nested if in https://github.com/scale/porta/tree/master/app/views/provider/admin/dashboards/_service_navigation.html.slim#L54