UX improvement label:documentation

[jacquesacc]

In the selection list for the days, it would be great to add the name of the topic of the day.
Running quickly the whole thing for now, but I will most likely wantt o come back on certain pages later : having the name will help !

Also, at the bottom of the page, it could be more user friendly to add arrows to go to the previous/next page instead of having to scroll up.

[444B]

@jacquesacc I think this is a great idea!

Cause:
I have looked into it and currently the names pages are autogenerated in https://github.com/streamlit/30days/blob/master/streamlit_app.py with the following code on lines 15-25:

md_files = sorted(
    [int(x.strip("Day").strip(".md")) for x in glob.glob1("content", "*.md")]
)
# skipped lines
days_list = [f"Day {x}" for x in md_files]

The code creates the names by stripping it from the .md files in the content/ directory and only taking the Day and Number

Solution:

1. We could either add the title to the names of the .md files in the content/ directory or
2. We could strip the H1 / header of each file(which describes the page) and append it appropriately to md_files or days_list

Either of these would be a scalable long term solution
ill probably circle back to this when I have a moment