allow to exclude discarded contracts from selection

index.ts

@@ -26,6 +26,10 @@ function init() {
             update();
         });
     }
+    let otherCheckBox = document.getElementById("discarded");
+    otherCheckBox.addEventListener('change', function () {
+        update();
+    });
 }
 
 function update() {
@@ -56,6 +60,9 @@ function isIncluded(contract) {
             included = false;
         }
     }
+    if (!(document.getElementById("discarded") as HTMLInputElement).checked && contract.discarded) {
+        included = false;
+    }
     return included;
 }