Fixed the style of some filters inputs (namely date filters) and added placeholders for dashboard mode. task 2995579 closes odoo/odoo#102604 X-original-commit: f6a661c926d3d34c9a011f2b2020a319e65754ae Related: odoo/enterprise#32485 Signed-off-by: Lucas Lefèvre (lul) <lul@odoo.com> Signed-off-by: Rémi Rahir (rar) <rar@odoo.com>