Remove or limit table of content at the main Airflow doc page

[potiuk]

Table of content here : http://apache-airflow-docs.s3-website.eu-central-1.amazonaws.com/docs/apache-airflow/latest/index.html at the main page of "apache-airflow" documentation is huge and useless (especially that we have it in directory on the left).

We should remove it or limit heavily (to 1st level only)

[potiuk]

cc: @mik-laj

[mik-laj]

It seems to me that it cannot be removed completely, but it will probably be possible to limit the levels of the depth quite simply.

I don't have plans to do it any time soon. I will add the label "good-first-issues" label.Maybe another person will be willing to take care of it.

[potiuk]

Cool!

[ashb]

@mik-laj You reverted this change so it's a problem again.

[mik-laj]

We should remove it or limit heavily (to 1st level only)

In my opinion, this ticket is already resolved.

http://apache-airflow-docs.s3-website.eu-central-1.amazonaws.com/docs/apache-airflow/latest/index.html

What else should we do here?