Implement batch voting

app/components/proposal-list/component.js

@@ -1,20 +1,23 @@
 import Component from '@ember/component';
+import { inject } from '@ember/service';
+import { empty } from '@ember/object/computed';
 
 export default Component.extend({
+  kredits: inject(),
 
   tagName: 'ul',
   classNames: ['proposal-list'],
 
+  selectedProposals: [],
+  submitButtonDisabled: empty('selectedProposals'),
+
   actions: {
-
-    confirm(proposalId) {
-      if (this.contractInteractionEnabled) {
-        this.confirmProposal(proposalId);
+    toggleSelect(proposalId, selected) {
+      if (selected) {
+        this.selectedProposals.removeObject(proposalId);
       } else {
-        window.alert('Only members can vote on proposals. Please ask someone to set you up.');
+        this.selectedProposals.addObject(proposalId);
       }
-    }
-
+    },
   }
-
 });