Adding React.js, Redux, revamping dashboard

app/assets/javascripts/components/components/column_header.jsx

@@ -0,0 +1,15 @@
+const ColumnHeader = React.createClass({
+  propTypes: {
+    type: React.PropTypes.string
+  },
+
+  render: function() {
+    return (
+      <div style={{ padding: '15px', fontSize: '16px', background: '#2f3441', flex: '0 0 auto' }}>
+        {this.props.type}
+      </div>
+    );
+  }
+});
+
+export default ColumnHeader;