Drop the "last_active" column in the users section of the
organization settings, and the "Bot_type" column in the bots
section on sm_min (576px or less). Also, drop the "Date_muted"
column in the muted topics section of the personal settings
on ml_min (425px or less).
Added new className "topic_date_muted" for the date_muted
column, and "bot_type" for the bot_type column, to hide them
using display none when the viewport is small.
Fixes: #24320
