improved duration and minute selector (#2264)

* do not close modal if form is dirty
* deprecated TimesheetConfiguration
* inject timezone in form types
* cleanup usage of UserDateTimeFactory
* allow to configure increment steps for minutes
* use 15 minutes step for datetimepicker in project edit form
* use rounding rules for increments in minute select for begin and end
* allow duration in multi user and admin timesheet forms
* make dropdown values configurable

tests/Mocks/Security/UserDateTimeFactoryFactory.php

@@ -1,25 +0,0 @@
-<?php
-
-/*
- * This file is part of the Kimai time-tracking app.
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace App\Tests\Mocks\Security;
-
-use App\Entity\User;
-use App\Tests\Mocks\AbstractMockFactory;
-use App\Timesheet\UserDateTimeFactory;
-
-class UserDateTimeFactoryFactory extends AbstractMockFactory
-{
-    public function create(?string $timezone = null): UserDateTimeFactory
-    {
-        $userFactory = new CurrentUserFactory($this->getTestCase());
-        $currentUser = $userFactory->create(new User(), $timezone);
-
-        return new UserDateTimeFactory($currentUser);
-    }
-}