added project start and end date (#1303)

* added sortable js library
* activity in invoice is optional
* added javascript widget for paginated boxes
* fix activity dropdown for globals only
* added timesheet service to reduce code duplication
* use repository to query for teams in dropdowns
* added project validator
* validate project start and end against timesheet
* include begin and end in dynamic form requests for projects
* added timezone and language option to import flag, improve timesheet import speed
* deactivate cross-timezone filter
* add virtual fields to field order list
* composer update
* added param to ignore dates
* position loader icon fixed - fixes #1330
* permission problem when creating a new project - fixes #1340
* remove dev dependencies webserver and thanks bundle
* stop information leak (begin and end date) in duration mode - fixes #1307
* unify timesheet edit dialog for user and admins
* fix security issue, own rates exposed to unauthorized users in multi-update dialog

src/Validator/Constraints/ProjectValidator.php

@@ -0,0 +1,48 @@
+<?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\Validator\Constraints;
+
+use App\Entity\Project;
+use App\Validator\Constraints\Project as ProjectConstraint;
+use Symfony\Component\Validator\Constraint;
+use Symfony\Component\Validator\ConstraintValidator;
+use Symfony\Component\Validator\Context\ExecutionContextInterface;
+use Symfony\Component\Validator\Exception\UnexpectedTypeException;
+
+class ProjectValidator extends ConstraintValidator
+{
+    /**
+     * @param Project|mixed $value
+     * @param Constraint $constraint
+     */
+    public function validate($value, Constraint $constraint)
+    {
+        if (!($constraint instanceof ProjectConstraint)) {
+            throw new UnexpectedTypeException($constraint, __NAMESPACE__ . '\Project');
+        }
+
+        if (!is_object($value) || !($value instanceof Project)) {
+            return;
+        }
+
+        $this->validateProject($value, $this->context);
+    }
+
+    protected function validateProject(Project $project, ExecutionContextInterface $context)
+    {
+        if (null !== $project->getStart() && null !== $project->getEnd() && $project->getStart()->getTimestamp() > $project->getEnd()->getTimestamp()) {
+            $context->buildViolation('End date must not be earlier then start date.')
+                ->atPath('end')
+                ->setTranslationDomain('validators')
+                ->setCode(ProjectConstraint::END_BEFORE_BEGIN_ERROR)
+                ->addViolation();
+        }
+    }
+}