Adds JavaScript roadmap (#1537)

* Add JavaScript roadmap project file

* Make way for JavaScript roadmap

* Add JavaScript roadmap on homepage

* Add JavaScript roadmap image

* Add content skeleton for javascript roadmap

* Fix flicker issue on javascript roadmap

* Fix broken build

content/roadmaps/108-python/resources.md

@@ -0,0 +1,7 @@
+> **We are still preparing the resources**. Please check back later or [subscribe to get notified](/signup).
+
+While we prepare the list, follow this simple advice to learn anything
+ 
+> Just **pick a project and start working on it**, you will learn all that you need along the way.
+
+**→**   [All Roadmaps](/roadmaps)  •  [Programming guides](/guides)  •  [Subscribe](/signup)