Merge pull request #45 from Bouncey/fix/ui

Fix up the UI and pull in the latest seed files

packages/learn/plugins/fcc-source-challenges/gatsby-node.js

@@ -45,7 +45,7 @@ that delivers challenge files to the plugin
   const { source } = pluginOptions;
   const createAndProcessNodes = () =>
     source()
-      .filter(node => node.challengeType !== 7)
+      .filter(nodes => nodes.some(node => node.superBlock !== 'Certificates'))
       .map(nodes => nodes.map(node => createChallengeNodes(node, reporter)))
       .map(nodes => nodes.map(node => createNode(node)))
       .subscribe();