fix(front/auth/register form): don't show password register method if there is no UserNameComponent

fixes #44

src/assets/views/auth/auth.svelte

@@ -62,20 +62,22 @@
             <Form action={route('register') + queryStr} submitText="Register" submitIcon="check">
                 <Field type="hidden" name="auth_method" value={registerUsingMagicLink ? 'magic_link': 'password'}/>
 
-                {#if $locals.has_username}
+                {#if $locals.hasUsername}
                     <Field type="text" name={registerUsingMagicLink ? 'name' : 'identifier'} icon="user"
                            placeholder="Choose your username"
                            pattern="[0-9a-z_-]+" required/>
                 {/if}
 
-                {#if registerUsingMagicLink}
+                {#if registerUsingMagicLink || !$locals.canRegisterWithPassword}
                     <Field type="email" name="identifier" icon="at-sign" placeholder="Your email address"
                            hint="You will receive a magic link in your mailbox. Click on the link from any device to register here."
                            required/>
+                    {#if $locals.canRegisterWithPassword}
                         <button on:click={() => registerUsingMagicLink=false} type="button">
                             <Icon name="key"/>
                             Use password
                         </button>
+                    {/if}
                 {:else}
                     <Field type="password" name="password" icon="key" placeholder="Choose a password" required/>
                     <Field type="password" name="password_confirmation" icon="key" placeholder="Confirm your password"

src/auth/AuthController.ts

@@ -46,8 +46,8 @@ export default class AuthController extends Controller {
         const hasUsername = userModelFactory.hasComponent(UserNameComponent);
         res.formatViewData('auth/auth', {
             auth_methods: authGuard.getAuthMethodNames(),
-            has_username: hasUsername,
-            register_with_password: hasUsername && userModelFactory.hasComponent(UserPasswordComponent),
+            hasUsername: hasUsername,
+            canRegisterWithPassword: hasUsername && userModelFactory.hasComponent(UserPasswordComponent),
         });
     }