[Feedback]: Usability on small screens

# Feedback Description:

When viewed on an iPhone the left hand menu is fully expanded which means that the main table is in a tiny bit of the window to the right. In addition the table is very narrow and needs to be scrolled.

## URL used to send feedback:
https://dashboard.kernelci.org/tree

Start at https://dashboard.kernelci.org/tree and reproduce the layout on an iPhone-sized viewport. Review the dashboard's responsive layout entry points and verify that the left menu does not crowd the table and that the table remains usable without excessive horizontal scrolling.

Written by the indexing model from the issue text.