Feature Updates and Improvements 23-217

## Content Analysis and Classification
- Update of labels and instructions on calendar - System tag filter update - Change of default meeting description - Change of default page size for contact list page to 100 - Prevention of skipping the form on calendar for known contact - Enable user to confirm information - Change of calendar avatar image to maintain aspect ratio - Enabling image uploading even if the image is not square - Various UI enhancements
## Rewritten Content using Markdown
The following updates have been made:
- **Calendar:** Labels and instructions have been updated for better clarity. - **Tag filter:** System tag has been updated to enhance filtering. - **Meeting description:** The default description has been changed. - **Contact list:** The default page size has been changed to 100. - **Calendar Form:** Known contacts can no longer skip the form. Users can confirm information. - **Avatar:** Calendar avatar image has been changed to maintain its aspect ratio even if an image uploaded is not square. - **UI:** Various enhancements have been made to the User Interface.



