Fix tests, remove obsolete initializers

app/initializers/defer-loading.js

@@ -1,20 +0,0 @@
-/**
- * This pauses the app's boot process until the window load event is fired.
- * It allows the user provided Web3 instance (e.g. Metamask, Mist Browser)
- * to be inserted before we try to use it.
- */
-export default {
-  name: 'defer-loading',
-  initialize: function(application) {
-    // Load event already fired, so web3 should be loaded if available
-    if (window.windowLoadComplete) { return true; }
-
-    // Pause app loading
-    application.deferReadiness();
-
-    window.addEventListener('load', function() {
-      // Continue app loading
-      application.advanceReadiness();
-    });
-  }
-};

app/initializers/register-models.js

@@ -1,10 +0,0 @@
-import Contributor from 'kredits-web/models/contributor';
-import Proposal from 'kredits-web/models/proposal';
-
-export default {
-  name: 'register-models',
-  initialize: function(app) {
-    app.register('model:contributor', Contributor, { singleton: false });
-    app.register('model:proposal', Proposal, { singleton: false });
-  }
-};

tests/unit/models/contributor-test.js

@@ -1,13 +1,12 @@
 import { module, test } from 'qunit';
 import { setupTest } from 'ember-qunit';
-
-import { run } from '@ember/runloop';
+import Contributor from 'kredits-web/models/contributor';
 
 module('Unit | Model | contributor', function(hooks) {
   setupTest(hooks);
 
   test('#avatarURL() returns correct URL', function(assert) {
-    let model = run(() => this.owner.lookup('service:store').createRecord('contributor'));
+    let model = Contributor.create();
     model.set('github_uid', '318');
 
     assert.equal(model.get('avatarURL'), 'https://avatars2.githubusercontent.com/u/318?v=3&s=128');