This commit fixes the reminder button classes to enable/disable the right ones as it's being clicked. (We also fix a css rule for event colors). Task ID 2325327 X-Original-commit 58917df45d93cd9787036582e6f745901996166c closes odoo/odoo#56988 X-original-commit: 0c78735ba82553da2633feb48901ed8d0043c049 Signed-off-by: Thibault Delavallee (tde) <tde@openerp.com> Signed-off-by: awa-odoo <awa-odoo@users.noreply.github.com>