Move about dialog into separate view and add API endpoint for system info

services/ApplicationService.php

@@ -14,4 +14,17 @@ class ApplicationService extends BaseService
 
 		return $this->InstalledVersion;
 	}
+
+	public function GetSystemInfo()
+	{
+		$pdo = new \PDO('sqlite::memory:');
+		$sqliteVersion = $pdo->query('SELECT sqlite_version()')->fetch()[0];
+		$pdo = null;
+
+		return array(
+			'grocy_version' => $this->GetInstalledVersion(),
+			'php_version' => phpversion(),
+			'sqlite_version' =>  $sqliteVersion
+		);
+	}
 }