dtable row share link (#4067)

* rebase master

* fix rebase error

* return dtable columns

frontend/src/shared-dtable-row.js

@@ -0,0 +1,26 @@
+import React from 'react';
+import ReactDOM from 'react-dom';
+import CodeMirror from 'react-codemirror';
+
+import 'codemirror/lib/codemirror.css';
+import './css/text-file-view.css';
+
+const { rowContent, columns } = window.shared.pageOptions;
+
+class SharedDTableRowView extends React.Component {
+  render() {
+    return (
+      <div className="shared-file-view-body text-file-view">
+        <CodeMirror
+          ref="code-mirror-editor"
+          value={rowContent + columns}
+        />
+      </div>
+    );
+  }
+}
+
+ReactDOM.render(
+  <SharedDTableRowView />,
+  document.getElementById('wrapper')
+);