added "create user" functionality (#37)

* added "create user" functionality #5
* improved user admin views
* added Role constraint and validator

src/AppBundle/Form/UserCreateType.php

@@ -0,0 +1,56 @@
+<?php
+
+/*
+ * This file is part of the Kimai package.
+ *
+ * (c) Kevin Papst <kevin@kevinpapst.de>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace AppBundle\Form;
+
+use Symfony\Component\Form\Extension\Core\Type\PasswordType;
+use Symfony\Component\Form\Extension\Core\Type\RepeatedType;
+use Symfony\Component\Form\FormBuilderInterface;
+use Symfony\Component\OptionsResolver\OptionsResolver;
+
+/**
+ * Defines the form used to create Users.
+ *
+ * @author Kevin Papst <kevin@kevinpapst.de>
+ */
+class UserCreateType extends UserEditType
+{
+
+    /**
+     * {@inheritdoc}
+     */
+    public function buildForm(FormBuilderInterface $builder, array $options)
+    {
+        $builder
+            ->add('username', null, [
+                'label' => 'label.username',
+                'required' => true
+            ])
+            ->add('plainPassword', RepeatedType::class, [
+                'required' => true,
+                'type' => PasswordType::class,
+                'first_options' => array('label' => 'security.label.password'),
+                'second_options' => array('label' => 'security.label.password_repeat'),
+            ]);
+
+        parent::buildForm($builder, $options);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function __configureOptions(OptionsResolver $resolver)
+    {
+        $resolver->setDefaults([
+            'class' => 'AppBundle:User',
+        ]);
+    }
+}