Changes since Usermin version 1.220

File Manager
Added the ability to extract tar.bz2 files.
Added a History button next to the field for entering a directory to show, for quickly navigating to recently entered paths.
Added text fields to the file info window showing the total size, number of sub-files and number of sub-directories in a directory. These are only populated when a new 'Get Size' button is clicked.

Read Mail
Improved cache speed for Maildir-format folders, and updated the code for adding to and deleting from Maildir folders to keep the cache in sync.
Fixed the mail list to not use sub-tables, which caused problems in Safari.
The character set used for the HTML page in which a message is displayed is taken from the message itself.
Improved support for IMAP mode, so that all folders are taken from and created on the IMAP server automatically. In this mode, access to local file folders is no longer available.

MySQL Database
Column headings in the Table Data page can be clicked to sort the data by that column.

PostgreSQL Database
Added support for editing data in tables under PostgreSQL version 8, which does not use OID columns.
Merged the table data editor code with the MySQL module.
Column headings in the Table Data page can be clicked to sort the data by that column.

Scheduled Emails
Added a preferences option for controling the sort order to scheduled emails.

Upload and Download
Added the ability to extract tar.bz2 files.