Fixed more input accessibility issues, also

- Added searchParams based router for easier testing
 - Added more stories to the storybook

stories/InputDynamicArray.stories.js

@@ -0,0 +1,55 @@
+import React from 'react';
+import {useActionState} from './helper';
+import InputDynamicArray from '../src/components/InputDynamicArray';
+import {Wrapper} from './ui';
+import {withA11y} from '@storybook/addon-a11y';
+
+export default {
+  title: 'InputDynamicArray',
+  component: InputDynamicArray,
+  decorators: [withA11y],
+};
+
+
+export const NumberType = () => {
+  const [value, setValue] = useActionState("onChange", [1,2,3]);
+
+  return (
+    <Wrapper>
+      <InputDynamicArray
+        type="number"
+        value={value}
+        onChange={setValue}
+      />
+    </Wrapper>
+  );
+};
+
+export const UrlType = () => {
+  const [value, setValue] = useActionState("onChange", ["http://example.com"]);
+
+  return (
+    <Wrapper>
+      <InputDynamicArray
+        type="url"
+        value={value}
+        onChange={setValue}
+      />
+    </Wrapper>
+  );
+};
+
+export const EnumType = () => {
+  const [value, setValue] = useActionState("onChange", ["foo"]);
+
+  return (
+    <Wrapper>
+      <InputDynamicArray
+	      fieldSpec={{values: {"foo": null, "bar": null, "baz": null}}}
+        type="enum"
+        value={value}
+        onChange={setValue}
+      />
+    </Wrapper>
+  );
+};