Tweaked gitignore

gitignore removed all composer and npm files, so automated builds would fail

conf/site/node_modules/react-bootstrap/esm/DropdownToggle.d.ts

@@ -0,0 +1,18 @@
+import * as React from 'react';
+
+import Button, { ButtonProps } from './Button';
+
+import { BsPrefixComponent, BsPrefixComponentClass } from './helpers';
+
+export interface DropdownToggleProps {
+  id: string;
+  split?: boolean;
+  childBsPrefix?: string;
+}
+
+declare class DropdownToggle<
+  // Need to use BsPrefixComponentClass to get proper type checking.
+  As extends React.ElementType = BsPrefixComponentClass<'button', ButtonProps>
+> extends BsPrefixComponent<As, DropdownToggleProps> {}
+
+export default DropdownToggle;