Add 4 links

- A Python guide to handling HTTP request failures -> Web
- Django vs Flask vs Pyramid: Choosing a Python Web Framework -> Web -> Frameworks
- Adding full-text search to the flask note-taking app -> Flask
- Django models, encapsulation and data integrity -> Django
Add 3 more links

- Add "In Python, it’s all about the attributes" under Beginner's Delight
- Add "Writing great documentation" under Documentation
- Add "11 Things I Wish I Knew About Django Development Before I Started My Company" under Web > Frameworks > Django