Dev Updates to Part 1

[emilygrabowski]

[Pratik editing with description]

This PR substantially overhauls Python Fundamentals. It should close all major existing issues.

This PR restructures Python Fundamentals, moving some sections around. It removes a substantial amount of unnecessary material. It fleshes out scientific computing. It overhauls the project, with more of a data science focus.

• Removes namespaces, %who, %whos (Closes namespace, %who, and %whos (notebooks 03 and 11) #6).
• Closes day 1 , lesson 6 change parameter to argument #7 (text has been edited in functions section).
• Closes Day2 lesson 7 answers out of sync with the lesson challenges #8 (solutions have been rewritten).
• Closes Suggested Revisions for the Day 4 project #9 (day 4 project has been overhauled).
• Closes Provide Guidance for Windows Anaconda Installation #11 (introduction to Anaconda install has been rewritten)
• Closes Curriculum Review #13 (no longer relevant)
• Closes add punct import for Day 2 Notebook 9 Challenge 4 solution #14 and Closes Add punct import to solutions Day 2 Notebook 9 Challenge 4 (acrostics) #15 (no longer relevant)
• Closes Import numpy as np? Day 3 Notebook 13 Challenge 2 solution  #16 (imports have been fixed)
• Closes 15_Files -- errors module challenge quetsion/answer incongruity #17 (file has been rewritten)
• Closes Day 4 Solution Notebook Part 5 process_document function uses global variable #20 (project is rewritten)
• Closes Use pip instead of Anaconda Navigator in Day 3 Libraries #21 (we use pip install in the jupyter notebook)
• Closes Update installation instructions to say Python 3.7 or higher #23 (should be Python 3.9 now)
• Closes Day_3/Day_3_Answers/13_Answers.ipynb is missing numpy import #24 (File I/O has been rewritten)
• Closes introduction of encoding = "utf-8" without explanation #25 (text files no longer used)
• Closes Fix typo in questions of Files #26 (rewritten File I/O)
• Closes Unnecessary line continuation (backslash) characters for dictionary literals #27 (these have all been removed)
• Closes Day 2 Notebook 11 & Day 3 Notebooks #32 (all notebooks have been rewritten)
• Closes Day 3 Comprehensions & Day 4 Notebooks #33 (all notebooks have been rewritten)