Move Accuracy => Average Loss

Average loss makes more sense in regards to chess than a percentage
figure
Better styling

Consider moving this block of information down to line up with the
centre of the advantage chart
Merge branch 'Divider' of github.com:ornicar/lila into Divider

* 'Divider' of github.com:ornicar/lila:
  Better styling
  Move Accuracy => Average Loss

Conflicts:
	modules/chess
styling must always be done in CSS