Make logo url part of environment

src/app/pages/login/login.page.ts

@@ -5,6 +5,7 @@ import {EditorService} from '../../service/editor.service';
 import {ApiService} from '../../service/api.service';
 import {NavigationService} from '../../service/navigation.service';
 import {AuthService} from '../../service/auth.service';
+import {environment} from '../../../environments/environment';
 
 export type LoginPageStep = 'greeter' | 'username' | 'password' | 'create-account';