Purpose ======= Give the user a better experience when handling events by removing useless views and using coherent names of fields. Specifications ============== Add placeholders in multiple fields, change names in event_event module to be more consistent with each other, remove and add filters/measures in events and tracks. Task-2646692 closes odoo/odoo#77389 Related: odoo/enterprise#21294 Signed-off-by: Thibault Delavallee (tde) <tde@openerp.com>