Reduce the parameter chaos by splitting the update function

src/Core/Installer.php

@@ -192,7 +192,7 @@ class Installer
 	 */
 	public function installDatabase($basePath)
 	{
-		$result = DBStructure::update($basePath, false, true, true);
+		$result = DBStructure::install($basePath);
 
 		if ($result) {
 			$txt = DI::l10n()->t('You may need to import the file "database.sql" manually using phpmyadmin or mysql.') . EOL;

src/Core/Update.php

@@ -166,7 +166,7 @@ class Update
 
 					// update the structure in one call
 					Logger::notice('Execute structure update');
-					$retval = DBStructure::update($basePath, $verbose, true);
+					$retval = DBStructure::performUpdate(false, $verbose);
 					if (!empty($retval)) {
 						if ($sendMail) {
 							self::updateFailed(