[Creation] Expose creation capability

...adding usage of  to avoid circular dependencies.

platform/core/bundle.json

@@ -193,6 +193,11 @@
                 "key": "delegation",
                 "implementation": "capabilities/DelegationCapability.js",
                 "depends": [ "$q" ]
+            },
+            {
+                "key": "creation",
+                "implementation": "capabilities/CreationCapability.js",
+                "depends": [ "$injector" ]
             }
         ],
         "services": [

platform/core/src/capabilities/CreationCapability.js

@@ -26,17 +26,31 @@ define(
     function (DomainObjectImpl, uuid) {
         'use strict';
 
-        function CreationCapability(capabilityService, domainObject) {
+        function CreationCapability($injector, domainObject) {
-            this.capabilityService = capabilityService;
+            this.$injector = $injector;
             this.domainObject = domainObject;
         }
 
+        /**
+         * @private
+         */
+        CreationCapability.prototype.getCapabilities = function (model) {
+            if (!this.capabilityService) {
+                this.capabilityService =
+                    this.$injector.get('capabilityService');
+            }
+            return this.capabilityService.getCapabilities(model);
+        };
+
         CreationCapability.prototype.create = function (model) {
             var id = uuid(),
                 capabilities = this.capabilityService.getCapabilities(model);
             return new DomainObjectImpl(id, model, capabilities);
         };
 
+        CreationCapability.prototype.invoke =
+            CreationCapability.prototype.create;
+
         return CreationCapability;
     }
 );