simplified theme settings and standard layout (#586)

src/Migrations/Version20190219200020.php

@@ -0,0 +1,40 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * 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 DoctrineMigrations;
+
+use App\Doctrine\AbstractMigration;
+use Doctrine\DBAL\Schema\Schema;
+
+/**
+ * Cleanup the user_preferences table from old configs.
+ */
+final class Version20190219200020 extends AbstractMigration
+{
+    public function up(Schema $schema): void
+    {
+        $platform = $this->getPlatform();
+
+        if (!in_array($platform, ['sqlite', 'mysql'])) {
+            $this->abortIf(true, 'Unsupported database platform: ' . $platform);
+        }
+
+        $userPrefs = $this->getTableName('user_preferences');
+
+        $this->addSql('DELETE FROM ' . $userPrefs. ' WHERE name = "theme.fixed_layout"');
+        $this->addSql('DELETE FROM ' . $userPrefs. ' WHERE name = "theme.boxed_layout"');
+        $this->addSql('DELETE FROM ' . $userPrefs. ' WHERE name = "theme.mini_sidebar"');
+    }
+
+    public function down(Schema $schema): void
+    {
+    }
+}