Fix ESLint errors

app/components/user-avatar/component.js

@@ -24,6 +24,9 @@ export default Component.extend({
 
     if (github_uid) {
       return `https://avatars2.githubusercontent.com/u/${github_uid}?v=3&s=${SIZES[this.size]}`;
+    } else {
+      // TODO use custom avatar
+      return '';
     }
   })
 

app/helpers/contribution-status.js

@@ -50,9 +50,7 @@ export default Helper.extend({
   },
 
   triggerRecompute () {
-    once(this, function () {
-      this.recompute();
-    });
+    once(this, this.recompute);
   }
 
 });

app/services/kredits.js

@@ -251,12 +251,12 @@ export default Service.extend({
       });
   },
 
-  getCurrentUser: computed('kredits.provider', function() {
+  getCurrentUser: computed('kredits.provider', 'currentUserAccounts.[]', function() {
     if (isEmpty(this.currentUserAccounts)) {
       return RSVP.resolve();
     }
     return this.kredits.Contributor
-      .functions.getContributorIdByAddress(this.get('currentUserAccounts.firstObject'))
+      .functions.getContributorIdByAddress(this.currentUserAccounts.firstObject)
       .then((id) => {
         // check if the user is a contributor or not
         if (id === 0) {