When introducing the templates for the "new page" feature in [1], on some elements classes ended up being specified twice, or being added without removing a contradicting class (e.g. different bottom paddings) This commit adjusts the blocks of the new page templates so that: - no class appears twice - only the visually applied class of several conflicting classes is kept For `pt*`, `pb*` and `o_cc*` the class with the highest number is the visually applied one. [1]: https://github.com/odoo/odoo/commit/b27d52c193a08fe6a4471c844afa3d01a33ccace task-3562147 closes odoo/odoo#139572 Related: odoo/design-themes#731 Signed-off-by: Romain Derie (rde) <rde@odoo.com>