improved invoices with new renderer (#306)

* added docx renderer and demo template
* added csv renderer and demo template
* added xlsx renderer and demo template
* added ods renderer and demo template
* added user calculator
* added invoice documentation

tests/Model/DashboardSectionTest.php

@@ -0,0 +1,42 @@
+<?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\Model;
+
+use App\Model\DashboardSection;
+use App\Model\Widget;
+use PHPUnit\Framework\TestCase;
+
+/**
+ * @covers \App\Model\DashboardSection
+ */
+class DashboardSectionTest extends TestCase
+{
+    public function testDefaultValues()
+    {
+        $sut = new DashboardSection('test');
+        $this->assertEquals('test', $sut->getTitle());
+        $this->assertEquals(0, $sut->getOrder());
+        $this->assertEquals([], $sut->getWidgets());
+        $this->assertEquals(DashboardSection::TYPE_SIMPLE, $sut->getType());
+    }
+
+    public function testSetter()
+    {
+        $sut = new DashboardSection('hello-world');
+        $sut->setType(DashboardSection::TYPE_CHART);
+        $sut->setOrder(13);
+        $sut->addWidget(new Widget('bar', []));
+
+        $this->assertCount(1, $sut->getWidgets());
+        $this->assertEquals(DashboardSection::TYPE_CHART, $sut->getType());
+        $this->assertEquals(13, $sut->getOrder());
+        $this->assertEquals('bar', $sut->getWidgets()[0]->getTitle());
+    }
+}