Many bug fixes and improvements (#1270)

* Add Ruby and Kotlin icons
Add the avatar of @curtishd

* Update README

* Synchronize zh-hant and zh versions.

* Translate the pythontutor blocks to traditional Chinese

* Fix en/mkdocs.yml

* Update the landing page of the en version.

* Fix the Dockerfile

* Refine the en landingpage

* Fix en landing page

* Reset the README.md

docs/index.md

@@ -1,9 +1,5 @@
----
-comments: false
-glightbox: false
-hide:
-  - footer
-  - toc
-  - edit
-  - navigation
----
+# Hello 算法
+
+动画图解、一键运行的数据结构与算法教程
+
+[开始阅读](chapter_hello_algo/)