[ADF-112] Change task details feature (due date) (#2071)

* Add Assignee to readonly mode

* Style adoption and first steps to editable mode

* Switch between mode coverage

* Rebase fix

* Because of design and requirement changes, revert unnecessary parts

* Small refactoring before the introduction of CardViewDateItem

* Fix AdfCardView tests

* Editable Card date item

* Do not allow edit on task details after the task is completed.

* Update task details request

* Login footer switch fix

* Login customisable copyright text

* Card text item (first sketches)

* Small fix for supported card items' template

* Dynamic component loading for card view items

* Test and linting fixes

* Updating Readme.md

* Update Readme.md

* Fix Readme.md errors

* CardViewTextItemComponent tests

* Rebase fix

ng2-components/ng2-alfresco-core/src/interface/card-view-item.interface.ts

@@ -0,0 +1,26 @@
+/*!
+ * @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.
+ */
+
+export interface CardViewItem {
+    label: string;
+    value: any;
+    key: string;
+    default?: any;
+    type: string;
+    displayValue: string;
+    editable?: boolean;
+}