* Fixed downlodable permissions while updating orders.
- Fixed undefined $wpdb fatal error
- Fixed how to update permissions when updated the billing_email
cc @mikejolley
* Use order CRUD to update admin order data
* Updated WC_Meta_Box_Order_Data::save() params and updated docblocks
* Missing period
* Handle cache and status on CRUD side
* i18n: simpler translation strings
* i18n: simpler translation strings
* i18n: readble printf(), and moving the %s placeholder to `%s product`
* i18n: make string translatable and remove the HTML tags
* i18n: avoide using HTML tags in translatino strings
* i18n: move the colon into the translation string and use %s placeholder for the IP
* i18n: use sprintf() on field-validation translation strings, and unify those strings
* i18n: move colons into the translation strings
* i18n: use `%s` placeholder as the site name in "Powered by WooCommerce" string
* i18n: use `%s` placeholder for min and max price
* i18n: rewrite the translation strings printf()
* Fix test error
* i18n: simpler translation strings
* i18n: simpler translation strings
* i18n: readble printf(), and moving the %s placeholder to `%s product`
* i18n: make string translatable and remove the HTML tags
* i18n: avoide using HTML tags in translatino strings
* i18n: move the colon into the translation string and use %s placeholder for the IP
* i18n: use sprintf() on field-validation translation strings, and unify those strings
* i18n: move colons into the translation strings
* i18n: use `%s` placeholder as the site name in "Powered by WooCommerce" string
* i18n: use `%s` placeholder for min and max price
* i18n: rewrite the translation strings printf()
* i18n: simpler translation strings
* i18n: simpler translation strings
* i18n: readble printf(), and moving the %s placeholder to `%s product`
* i18n: make string translatable and remove the HTML tags
* i18n: avoide using HTML tags in translatino strings
* RTL+i18n: product title stricture as translation string to allow RTL languages to change `→` TO `←`
* i18n: move the `→` into the translation string to allow RTL languages to translate to `←`
* RTL: product filter indent using `→` and `←` chars
* a11y: remove `←` char, it's a bad accessibility practice to use visual indicators to point to menus
* a11y: remove `←` char, it's a bad accessibility practice to use visual indicators to point to menus