add style for actor tiles

render actors got from backend
backend test code to get actors

src/elements/Tag/Tag.js

@@ -2,6 +2,7 @@ import React from 'react';
 
 import styles from './Tag.module.css';
 import CategoryPage from '../../pages/CategoryPage/CategoryPage';
+import GlobalInfos from '../../GlobalInfos';
 
 /**
  * A Component representing a single Category tag
@@ -18,18 +19,16 @@ class Tag extends React.Component {
      * click handling for a Tag
      */
     TagClick() {
+        const tag = this.props.children.toString().toLowerCase();
+
         if (this.props.onclick) {
-            this.props.onclick();
+            this.props.onclick(tag);
             return;
         }
 
-        const tag = this.props.children.toString().toLowerCase();
-
         // call callback functin to switch to category page with specified tag
-        this.props.viewbinding.changeRootElement(
-            <CategoryPage
-                category={tag}
-                viewbinding={this.props.viewbinding}/>);
+        GlobalInfos.getViewBinding().changeRootElement(
+            <CategoryPage category={tag}/>);
     }
 }
 

src/elements/Tag/Tag.test.js

@@ -16,14 +16,11 @@ describe('<Tag/>', function () {
     });
 
     it('click event triggered and setvideo callback called', function () {
-        global.fetch = global.prepareFetchApi({});
+        global.fetch = prepareFetchApi({});
         const func = jest.fn();
-        const elem = {
-            changeRootElement: () => func()
-        };
+        prepareViewBinding(func);
 
-        const wrapper = shallow(<Tag
-            viewbinding={elem}>test</Tag>);
+        const wrapper = shallow(<Tag>test</Tag>);
 
         expect(func).toBeCalledTimes(0);