fix: don't open external links to another tab by default

This caused a problem for links that were not blog.embarklabs.io,
but still embarklabs.io, because it opened a new tab each time

_config.yml

@@ -37,3 +37,5 @@ node_sass:
   outputStyle: nested
   precision: 5
   sourceComments: false
+external_link:
+  enable: false

deploy-site.js

@@ -4,7 +4,7 @@ const path = require('path');
 const args = require('minimist')(process.argv.slice(2));
 
 const execWithOutput = (cmd) => execSync(cmd, { stdio: 'inherit' });
-
+// FIXME this file still points to the Embark site
 const DEPLOY_REPOSITORY = 'https://github.com/embarklabs/embark-site';
 const DEPLOY_REMOTE = 'embark-site';