reduce time for auto expire to 30 days by default

apps/files_trashbin/lib/trash.php

@@ -25,7 +25,7 @@ namespace OCA\Files_Trashbin;
 class Trashbin {
 	// how long do we keep files in the trash bin if no other value is defined in the config file (unit: days)
 
-	const DEFAULT_RETENTION_OBLIGATION = 180;
+	const DEFAULT_RETENTION_OBLIGATION = 30;
 
 	// unit: percentage; 50% of available disk space/quota
 	const DEFAULTMAXSIZE = 50;

config/config.sample.php

@@ -114,8 +114,8 @@ $CONFIG = array(
 /* Password to use for sendmail mail, depends on mail_smtpauth if this is used */
 "mail_smtppassword" => "",
 
-/* How long should ownCloud keep deleted files in the trash bin, default value:  180 days */
-'trashbin_retention_obligation' => 180,
+/* How long should ownCloud keep deleted files in the trash bin, default value:  30 days */
+'trashbin_retention_obligation' => 30,
 
 /* allow user to change his display name, if it is supported by the back-end */
 'allow_user_to_change_display_name' => true,