[FIX] typo in odoo.py

Fixes #4203
[IMP] mail : add compose mail button on top menu to send private emails
[FIX] number of blogs by month according to blog/tags
[IMP] ecommerce onboarding misc improvements: tour, qty inc/dec, add placeholder for product desc bottom of add to cart button, add print button, cart icon fix for all themes, and last delivery module menu add to sale, so now both sale or warehouse delivery menu with access right stock.group_stock_manager and base.group_sale_manager, move from demo file to data file set for default one data as a delivery courier.