Auto-scrolling when looking at running task logs

[thahnen]

Description

When looking at the output (logs) of running tasks, the website should always scroll down and not get stuck in the middle of the output where I have to manually scroll down. Another option is to / additionally, only show the x last lines of the output.

Context

We're using Cirrus CI on a daily basis and most of the time I'm closely monitoring the logs of a running task (e.g. due to failures in earlier runs). It would help a LOT if the website would scroll down automatically because currently it's not and it doesn't really help on the monitoring aspect.

Anything Else

Running on macOS, and testing with various browsers - the behavior is the same.