fix: Fix spacing in search box

Merged https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/24459/diffs and we had this part

$spacers: (
  0: 0,
  1: ($spacer * .5),
  2: ($spacer),
  3: ($spacer * 2),
  4: ($spacer * 3),
  5: ($spacer * 4)
);

which would change how .pl-x .pr-x would work.

closes #128 (closed)