Remove external link icon next to links (#270)

* Force icon to be small

* Put max width on icon

* Don't show external link icon next to default link

- For some reason, the icon loads super large quickly on load of the homepage which is distracting
- The pdf and meetup icons don't seem to have the problem.
- I actually think the problem is that the "Subscribe to our mailing list" link is an external link above the fold.

Author: deweydell

src/components/link/index.js

@@ -1,6 +1,6 @@
 import React from 'react'
 import { FontAwesomeIcon } from '@fortawesome/react-fontawesome'
-import { faExternalLinkAlt, faFilePdf } from '@fortawesome/free-solid-svg-icons'
+import { faFilePdf } from '@fortawesome/free-solid-svg-icons'
 import { faMeetup } from '@fortawesome/free-brands-svg-icons'
 
 export const ExternalLink = ({ href, text, icon }) => {
@@ -11,7 +11,7 @@ export const ExternalLink = ({ href, text, icon }) => {
       case 'meetup':
         return faMeetup
       default:
-        return faExternalLinkAlt
+        return null
     }
   }