Description of problem:

Currently there is a fixed min-width set for result columns in the
matrix view. This causes that there is quite much white space
wasted around the individual PASS/FAIL tags and leads to huge
width of the table and very narrow task name column which causes
task names to be wrapped across multiple lines which finally spans
the table vertically as well.

For an example of such result see:
https://beaker.engineering.redhat.com/matrix/?toggle_nacks_on=on&job_ids=60146+60145

I think using a reasonable padding for the whiteboard and/or
result table cells instead of the fixed minimal width would
produce much more eye-soothing experience and prevent unnecessary
scrolling.

Version-Release number of selected component (if applicable):
Version - 0.6.5