Feat: Doughnut chart react on datas

src/libs/data_processing.js

@@ -25,3 +25,8 @@ function strContains (string, words, invert) {
   }
 }
 
+export function total (row, field='Montant') {
+  var sum = row.map(x => parseFloat(x[field]))
+    .reduce((sum, x) => sum + x, 0)
+  return Math.round(sum)
+}