Common for all apps

• 2025/05/29 Improved the email text sent to administrators when users without registered email addresses perform password resets, etc.
• 2025/05/27 Multilevel folder structure is now supported
• 2025/04/22 Minor improvements made to the search tag function.
• 2024/09/27 The phased migration of some domains for Teachme Biz has been completed.
• 2024/08/27 Domain for images, videos and logos has been changed.