Brieuc-brd
2b967b59ee
Prior to this commit, some of the main styles related to event elements in calendars were set in the Calendar module. This created layout issues when we installed independent modules without installing the Calendar module (eg. `planning` or `hr_payroll`). To fix that, this commit moves the necessary styles into `web`. task-3617329 Part of task-3575827 Part-of: odoo/odoo#154964