change order of buttons to have sort button first

the sort button has a varying width: placing it leftmost to avoid having
the other buttons move
2 jobs for master in 8 minutes and 56 seconds (queued for 1 second)
Status Name Job ID Coverage
  Build
passed linux kf5-qt5 qt5.12 #68403

00:08:55

86.0%
passed reuse #68402

00:00:29