Add render_best_answer method to capitalize first character of best_answer

sbas/tables.py

@@ -77,6 +77,15 @@ class QuestionTable(tables.Table):
             return format_html("<h5>{}</h5>{}", title, mark_safe(value))
         return mark_safe(value)
 
+    def render_best_answer(self, value, record=None, **kwargs):
+        """Show only the capitalised first character of the best_answer."""
+        if value is None:
+            return ""
+        s = str(value).strip()
+        if not s:
+            return ""
+        return s[0].upper()
+
 
 
 class UserAnswerTable(tables.Table):