Use currentUser.login; the id is the database id

The "manage owners" link wasn't showing up for me even when I was an
owner because it couldn't match up logins and database ids :)

Author: carols10cents

app/controllers/crate/version.js

@@ -27,7 +27,7 @@ export default Controller.extend({
     categories: computed.alias('crate.categories'),
     badges: computed.alias('crate.badges'),
     isOwner: computed('crate.owner_user', function() {
-        return this.get('crate.owner_user').findBy('login', this.session.get('currentUser.id'));
+        return this.get('crate.owner_user').findBy('login', this.session.get('currentUser.login'));
     }),
 
     sortedVersions: computed.readOnly('crate.versions'),

tests/acceptance/crate-test.js

@@ -142,7 +142,7 @@ test('navigating to the owners page when not an owner', async function(assert) {
 
     this.application.register('service:session-b', Ember.Service.extend({
         currentUser: {
-            id: 'iain8'
+            login: 'iain8'
         }
     }));
 
@@ -158,7 +158,7 @@ test('navigating to the owners page', async function(assert) {
 
     this.application.register('service:session-b', Ember.Service.extend({
         currentUser: {
-            id: 'thehydroimpulse'
+            login: 'thehydroimpulse'
         }
     }));