EDIT

Currently enabling of the vaadin UI contexts is managed through the CdmVaadinConfiguration class, specifically by calls to the isUIEnabled() method.
This method reads the configuration from a java properties file which is stored per instance in ./cdmLibrary/remote-webapp/{instance}/cdvaadin-apps.properties

The whole mechanism using isUIEnabled() can for sure be replaced by making use of spring profiles. When switching to spring profiles, the configuration should still be read from a config file located in .cdmLibrary/remote-webapp/{instance}/