Broken styling for underlined & required TextField

[kevicency]

Adding is-required and ms-TextField--underlined to the same TextField component breaks the styling

Markup for the screenshot:

<div class="ms-TextField ms-TextField--underlined">
  <label class="ms-Label">Name:</label>
  <input class="ms-TextField-field" type="text">
</div>

<div class="ms-TextField is-required ms-TextField--underlined">
  <label class="ms-Label">Name:</label>
  <input class="ms-TextField-field" type="text">
</div>

[Jahnp]

That's pretty gross. Thanks for the tip, we'll look into this.

[philworthington]

Great catch. Pull request #98 should fix the issue.