1.83

VERSION 1.83 (05/30/2017)
[stock.php] Fixed typo in ternary operator (thanks to ICE)

VERSION 1.82 (05/17/2017)
[save_item.php] Fixed db error in strict mode when saving an item with no image item_attribute_id (thanks to jacobi22)

VERSION 1.81 (05/16/2017)

[modify_order.php] Fixed options of shipping state select
[save_order.php] Fixed setting "hide country name", if customer and shop country match (reported by paulchen)
[save_order.php] Fixed state select if setting "display shipping form" is always
Fixed some warnings about a non-numeric value
Replaced check for an empty string by the function empty()
Fixed incompatibilities with mysql save mode (requested by gemnb, thanks to jacobi22). Basically set default values for most database fields.