[contributors] update python landing page to include contributors

[mmcky]

@DrDrij we would like to update the front page (the current python.quantecon.org) or the index.rst file for lecture-source-py to include `contributors.

We would like to:

1. move the commit link to be an item below the Last compiled: {DATE}:
2. add another contributors item and link to contributors page on github https://github.com/QuantEcon/lecture-source-py/graphs/contributors (for now)

In the future we will want to make an contributors.rst page that is similar to https://datascience.quantecon.org/contributors.html.

This will address Item 3 in https://github.com/QuantEcon/lecture-source-py/issues/946

[DrDrij]

Will put together the following and implement any feedback posted here:

[jstac]

Please feel free to ping me if you need input.

[mmcky]

thanks @DrDrij I like the solution you post above to include Contributors.

[jstac]

Thanks @DrDrij.

I'd like to make the contributors more prominent. How about we increase the font size and also take the bold off the date (so it doesn't steal all the attention).

[mmcky]

@DrDrij can we apply the final version to:

1. lecture-python-programming
2. lecture-python-intro
3. lecture-python-advanced

if theme related otherwise please update index.rst in the respective public repos.

[DrDrij]

@DrDrij can we apply the final version to:

1. lecture-python-programming
2. lecture-python-intro
3. lecture-python-advanced

if theme related otherwise please update index.rst in the respective public repos.

Will do. It's all in the index.rst files.

[mmcky]

Please submit as PR's -- that will be helpful. Thanks.

[DrDrij]

PR is good to go: https://github.com/QuantEcon/lecture-source-py/pull/966

[jstac]

I'll let you close this when ready @mmcky .

[mmcky]

We are currently pointing to github but we will need to create a manual contributors page when we do the split as the new repos will have no history.