Merge pull request #3705 from nextcloud/doc/changelog-2.4

# Changelog

## 2.4.0 – 2021-11-25

### Added

- Advanced Search for Rooms and Resources

- Room Auto Suggestions for events that will fit all attendees

### Changed

- Design Polishing of Right Sidebar

  - Merged Alarm, Detail and Repeat tab in right sidebar

  - Moved Resources to separate tab

  - Placeholder Text and field heights

  - Timepicker

  - Simplified Simple Editor

  - ...

- Event recurrences

  - Calendar can't be edited any longer

- Dependencies

- Translations

### Fixed

- Sharing: Groups and Principal URIs with spaces and other special characters

- Trashbin timestamp

## 2.3.4 – 2021-09-28

### Fixed

- Event height in weekly view

- Events disappearing from grid

- Movnig calendars on Android

- Moving calendars on Android

- Missing default status

- Simple editor size

- Sidebar datepicker rendering