Added Django for Everybody and Restructuring of Python topic

[BasilVictor]

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What does this PR do?

Add Resource(s) , Improve Repo

For resources

Description

Add Resource(s) - Added Django for Everybody (by Charles R. Severance) open source materials of the Coursera course
Improve Repo - Restructured Python category and added Django and Flask as sub topics

Why is this valuable (or not)?

It is a great place for Django beginners

How do we know it's really free?

It is a Copyright Creative Commons Attribution 3.0 website.

For book lists, is it a book? For course lists, is it a course? etc.

It is a course

Checklist:

• Not a duplicate
• Included author(s) if appropriate
• Lists are in alphabetical order
• Needed indications added (PDF, access notes, under construction)

[SethFalco]

I left some comments for you that should hopefully help address the formatting issues.

You can check out the contribution guide (CONTRIBUTING.md) for more information on formatting and other guidelines for this repository. You can click on the failed check below and head to Travis CI to see exactly what was wrong with your PR and how to fix it!

Edit: I originally left two comments, but deleted one as it was a non-issue as I simply miss read your change. Sorry about that!

[BasilVictor]

@SethiPandi resolved

[eshellman]

Thanks! Opinions on #4573 welcome.