Layout for talks contains overlapping text and icons on small phones

When viewing talk details the text and icons can overlap when displayed on a small phone. The layout is fine on a Pixel XL but on a Pixel 3a the layout real estate starts to overlap.

[GiorgioNatili]

This should be fixed by this PR #30.

I'm on your branch and built with the new file but on my Pixel3A the layout still has some overlapping:

$ git branch -v
bugfix/issue-19-agenda-empty-items a3d4be7 Fix merge issue
bugfix/issue-21-agenda-missing-fullname 861fc2e Fix the missing surname in the agenda

• bugfix/issue-24-speaker-image-overlap 93113d1 Fix missing file