by collecting a list of DOM selectors to be queried/shown via jQuery
multiple-selector at the same time instead of calling .show() for each
one of them.

For 1-2 rows this is on-par with the previous implementation, however it is
around 2x faster when the result set contains many rows (say 100 or
1000).

WARNING: when a result set contains hundreds of rows there is still a
noticeable lag on the page. For example if filtering 1000 rows for
is_automated=false, where only 10 rows have the value of True and the
rest 990 have the value of False!

See https://api.jquery.com/multiple-selector/

building upon the previous change we now either show or hide rows on
screen depending on what the actual result set is.

When the rows which match the filter are less than the ones which don't
we display only them. Else we display everything and hide the rows which
don't match the filter. This always results in the minimum number of
display updates.

For the extreme scenario where 990/1000 rows match is_automated=false this
provides 30x improvement!

WARNING: for scenarios which are not on the extreme case, yet still
result in 100s of rows that need to be displayed this commit does not
offer any optimization compared to the previous one!

will be used for filtering TestExecutions in the next commit!

NOTE: use a different underlying API