[ADF-1188] Upload related components, unify interfaces, deprecate disableWithNoPermission (#2216)

* Deprecate enabled input property in UploadDragAreaComponent

* Refactoring about disabled property

* using adf-node-permission directive, deprecating disableWithNoPermission

* Parent component access from directive

* Upliad drag area component uses the directive also

* Usage of property instead of helper method in the NodePermissionSubjects

* Fix small issues

* Update readme files

ng2-components/ng2-alfresco-core/src/interface/injection.tokens.ts

@@ -0,0 +1,20 @@
+/*!
+ * @license
+ * Copyright 2016 Alfresco Software, Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { Component, InjectionToken } from '@angular/core';
+
+export const EXTENDIBLE_COMPONENT = new InjectionToken<Component>('extendible.component');