Headers of columns and rows are not properly aligned on RTL direction. After this commit, they will be. closes odoo/odoo#78261 X-original-commit: 2fb992d3ced438fd012d7702bdfbe23cce6000a6 Related: odoo/enterprise#21645 Signed-off-by: Géry Debongnie (ged) <ged@openerp.com>