Do final internal renameing

A little minor change, by moving the CodiMD version header in its own
middleware. Should simplify to determine the version number of the
Backend in future.

Signed-off-by: Sheogorath <sheogorath@shivering-isles.com>

lib/web/statusRouter.js

@@ -17,8 +17,7 @@ statusRouter.get('/status', function (req, res, next) {
   realtime.getStatus(function (data) {
     res.set({
       'Cache-Control': 'private', // only cache by client
-      'X-Robots-Tag': 'noindex, nofollow', // prevent crawling
-      'HackMD-Version': config.version
+      'X-Robots-Tag': 'noindex, nofollow' // prevent crawling
     })
     res.send(data)
   })
@@ -102,8 +101,7 @@ statusRouter.get('/config', function (req, res) {
   }
   res.set({
     'Cache-Control': 'private', // only cache by client
-    'X-Robots-Tag': 'noindex, nofollow', // prevent crawling
-    'HackMD-Version': config.version
+    'X-Robots-Tag': 'noindex, nofollow' // prevent crawling
   })
   res.render(config.constantsPath, data)
 })