Big re-write :)

I reordered the code in a more clean an organized way. Also this improves a lot
the emacs startup time again, bucause after some updates it becomes a bit slow
with the old configuration, so i did it again in a new way.

configs/lang-js.el

@@ -10,7 +10,6 @@
 ;;; Code:
 
 (use-package js
-  :defer t
   :ensure nil
   :mode
   ("\\.js$" . js-mode)
@@ -22,8 +21,6 @@
 
 ;; json-mode
 (use-package json-mode
-  :defer t
-  :ensure t
   :mode
   ("\\.json$" . json-mode)
   :config