message: website: add an additional filter predicate to backers
diff: @@ -83,7 +83,7 @@ class Contributors extends React.Component {
  </p>
  <div>
  {backers
  - .filter(b => b.tier === 'backer')
  + .filter(b => b.tier === 'backer' && !b.slug.includes('adult'))
  .map(b => (
  <a
  key={b.id}
  