New Integration page, based on the current one but only these features:

• promote to staging (if something has changed)

• staging configuration history

• promote to production (if something has changed)

• production configuration history

First version can be limited in explaining what the changes are between config and staging config.

// dev note

• edit staging public URL (if allowed)
• edit promotion public URL (if allowed)
  have been moved to settings in https://issues.jboss.org/browse/THREESCALE-3576