14.6 Support flag to enable XPage Campaigns in UI (default disabled)

By default, the BE will return

"pageCampaignSupported" : false,
"labelEnabled" : true,
"campaignEnabled" : false,

Only 'labelEnabled' is true by default since this won't lead to confusion or that a customer by not understanding the new feature setting a document version live by accident. Label is a handy harmless feature. campaigns on page level is a bit more complex and a customer can better read documentation before switching it on. Therefore, in 14.6, by default it is disabled in the UI.

To enable the feature, a developer needs to bootstrap the following in the 'cms webapp' :

definitions:
  config:
    /hippo:configuration/hippo:modules/channel-content-service/hippo:moduleconfig:
      page.campaign.supported: true