Show side abbrevations on the motion statistics page again.

Tabbycat used to show side names, but at some point this broke. This commit fixes this.

tabbycat/motions/statistics.py

@@ -10,6 +10,14 @@
 from .models import Motion, RoundMotion
 
 
+def abbrv_of_bp_side(side: int) -> str:
+    """
+    Get the abbreviated name of a BP side.
+    """
+    assert 0 <= side < 4
+    return {0: "OG", 1: "OO", 2: "CG", 3: "CO"}.get(side)
+
+
 def _annotate_annotations(dict_motions, queryset, fields):
     for item in queryset:
         for field in fields:
@@ -236,16 +244,17 @@ def _collate_prelim_motion_annotations(self):
             motion.counts_by_bench = {'gov': 0, 'opp': 0}
 
             for side in self.tournament.sides:
+                side_abbrv = abbrv_of_bp_side(side)
                 average = getattr(motion, 's%d_average' % side)
                 if average is None:
                     continue
-                motion.averages.append((side, average, average / 6 * 100))
+                motion.averages.append((side_abbrv, average, average / 6 * 100))
                 counts = []
                 for points in [3, 2, 1, 0]:
                     count = getattr(motion, 's%d_%d_count' % (side, points))
                     percentage = count / motion.ndebates * 100 if motion.ndebates > 0 else 0
                     counts.append((points, count, percentage))
-                motion.counts_by_side.append((side, counts))
+                motion.counts_by_side.append((side_abbrv, counts))
 
                 if side == DebateSide.OG or side == DebateSide.OO:
                     motion.counts_by_half['top'] += (average / 2)
@@ -295,11 +304,12 @@ def _collate_elim_motion_annotations(self):
             motion.counts_by_side = []
 
             for side in self.tournament.sides:
+                side_abbr = abbrv_of_bp_side(side)
                 advancing = getattr(motion, 's%d_advancing' % side)
                 advancing_pc = advancing / motion.ndebates * 100 if motion.ndebates > 0 else 0
                 eliminated = getattr(motion, 's%d_eliminated' % side)
                 eliminated_pc = eliminated / motion.ndebates * 100 if motion.ndebates > 0 else 0
-                motion.counts_by_side.append((side, advancing, advancing_pc, eliminated, eliminated_pc))
+                motion.counts_by_side.append((side_abbr, advancing, advancing_pc, eliminated, eliminated_pc))
 
 
 class RoundMotionBPStatsCalculator(MotionBPStatsCalculator):