Resolve "Feebdack y axis is broken"

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Closes #603 (closed)

src/main/resources/templates/home/feedback.html

@@ -119,7 +119,7 @@
                                     ticks: {
                                         beginAtZero: true,
                                         precision: 0,
-                                        stepSize: 1
+                                        callback: (value) => { if (value % 1 === 0) return value; },
                                     }
                                 }]
                             }