Adding courses from Kaggle and screencasts (#3975)

* check_urls=free-courses-en.md

* check_urls=free-podcasts-screencasts-pt_BR.md

* check_urls=free-courses-en.md

* check_urls=free-podcasts-screencasts-pt_BR.md

* check_urls=free-courses-en.md

free-courses-en.md

@@ -152,7 +152,9 @@
 ### Data Science
 
 * [Advanced Data Mining with Weka MOOC](https://www.cs.waikato.ac.nz/ml/weka/mooc/advanceddataminingwithweka/)
+* [Data Cleaning by Rachael Tatman at Kaggle](https://www.kaggle.com/learn/data-cleaning)
 * [Data Mining with Weka MOOC](https://www.cs.waikato.ac.nz/ml/weka/mooc/dataminingwithweka/)
+* [Data Visualization by Alexis Cook at Kaggle](https://www.kaggle.com/learn/data-visualization)
 * [Introduction to Python for Data Science](https://www.edx.org/course/introduction-python-data-science-microsoft-dat208x-3)
 * [More Data Mining with Weka MOOC](https://www.cs.waikato.ac.nz/ml/weka/mooc/moredataminingwithweka/)
 * [The Analytics Edge](https://www.edx.org/course/analytics-edge-mitx-15-071x-3)

free-podcasts-screencasts-pt_BR.md

@@ -34,6 +34,7 @@
 ### DataScience
 
 * [Pizza de Dados](https://pizzadedados.com) (podcast)
+* [Programação Dinâmica - Machine Learning em Python](https://www.youtube.com/playlist?list=PL5TJqBvpXQv5CBxLkdqmou_86syFK7U3Q) (screencast)
 
 
 ### HTML / CSS
@@ -84,6 +85,7 @@
 * [Curso em Vídeo - Python Mundo 1](https://www.youtube.com/watch?v=S9uPNppGsGo&list=PLHz_AreHm4dlKP6QQCekuIPky1CiwmdI6) (screencast)
 * [Curso em Vídeo - Python Mundo 2](https://www.youtube.com/watch?v=nJkVHusJp6E&list=PLHz_AreHm4dk_nZHmxxf_J0WRAqy5Czye) (screencast)
 * [Curso em Vídeo - Python Mundo 3](https://www.youtube.com/watch?v=0LB3FSfjvao&list=PLHz_AreHm4dksnH2jVTIVNviIMBVYyFnH) (screencast)
+* [Programação Dinâmica - Introdução à Python por Projetos](https://www.youtube.com/playlist?list=PL5TJqBvpXQv6AEfVymby32MinHdxZA-8J) (screencast)
 
 
 ### TypeScript