performance improvements (#2329)

* remove work from constructor
* refactor twig extensions
* upgrade theme
* replace sub-request with direct template rendering

src/Twig/RuntimeExtensions.php

@@ -0,0 +1,50 @@
+<?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\Twig;
+
+use App\Twig\Runtime\EncoreExtension;
+use App\Twig\Runtime\ExporterExtension;
+use App\Twig\Runtime\MarkdownExtension;
+use App\Twig\Runtime\ThemeExtension;
+use App\Twig\Runtime\TimesheetExtension;
+use App\Twig\Runtime\WidgetExtension;
+use Twig\Extension\AbstractExtension;
+use Twig\TwigFilter;
+use Twig\TwigFunction;
+
+class RuntimeExtensions extends AbstractExtension
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function getFunctions()
+    {
+        return [
+            new TwigFunction('trigger', [ThemeExtension::class, 'trigger'], ['needs_environment' => true]),
+            new TwigFunction('javascript_translations', [ThemeExtension::class, 'getJavascriptTranslations']),
+            new TwigFunction('timesheet_exporter', [ExporterExtension::class, 'getTimesheetExporter']),
+            new TwigFunction('active_timesheets', [TimesheetExtension::class, 'activeEntries']),
+            new TwigFunction('encore_entry_css_source', [EncoreExtension::class, 'getEncoreEntryCssSource']),
+            new TwigFunction('render_widget', [WidgetExtension::class, 'renderWidget'], ['is_safe' => ['html']]),
+        ];
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getFilters()
+    {
+        return [
+            new TwigFilter('md2html', [MarkdownExtension::class, 'markdownToHtml'], ['pre_escape' => 'html', 'is_safe' => ['html']]),
+            new TwigFilter('desc2html', [MarkdownExtension::class, 'timesheetContent'], ['pre_escape' => 'html', 'is_safe' => ['html']]),
+            new TwigFilter('comment2html', [MarkdownExtension::class, 'commentContent'], ['pre_escape' => 'html', 'is_safe' => ['html']]),
+        ];
+    }
+}