Add content for python data analysis

[aragilar]

• [ ] instructors
• [ ] helpers
• [ ] software
• [ ] syllabus (see https://github.com/MQ-software-carpentry/2018-07-03-resbaz-python-advanced/edit/gh-pages/_includes/sc/syllabus.html)

[tasospap21]

Data Manipulation and Visualisation has been updated.