disable gatsby-plugin-catch-links

This was catching relative links which should got to auspice (e.g. the zika tile on the splash page) but modifying the link to go to a gatsby 404 (the server never saw the get request and so couldn't send to auspice). This plugin is generally problematic for us & needs attention.

static-site/gatsby-config.js

@@ -68,6 +68,6 @@ module.exports = {
       }
     },
     "gatsby-plugin-sharp",
-    "gatsby-plugin-catch-links" // See https://github.com/nextstrain/nextstrain.org/issues/34
+    // "gatsby-plugin-catch-links" // See https://github.com/nextstrain/nextstrain.org/issues/34
   ]
 };