Use null coalescing operator to fix notice

Product combination price edit : Use blur instead of onkeyup to avoid price flip

Define version to 1778

Name has no reason to live in admin_orders_display_customization_imge_route

Bump version to 1.7.7.7

Use _DB_PREFIX_ constant instead of ps_ in SQL queries

Co-authored-by: PululuK <pululuandre@hotmail.com>

Add changelog for 1.7.7.6    (DO NOT MERGE)

Fixed selector for fetching if the tax is included 

Check variable before using it

Build assets on 1.7.7.x 

Don't recalculate total when PS_ORDER_RECALCULATE_SHIPPING is 0 and editing a carrier

Update prestashop modules on 1.7.7.x

Fix combination ecotax display and edition

Fix performance issue on Smarty template caching