Implemented offline indicator

frontend/components/Offline/injectOffline.js

@@ -0,0 +1,19 @@
+import React from 'react';
+
+const injectOffline = (WrappedComponent) => {
+  return class OfflineWrapper extends React.Component {
+    static contextTypes = {
+      offline: React.PropTypes.bool,
+    };
+
+    render() {
+      const newProps = {
+        offline: this.context.offline,
+      };
+
+      return (<WrappedComponent { ...this.props } { ...newProps } />);
+    }
+  };
+};
+
+export default injectOffline;