* fix(items): validate item_number and skip receiving quantity default for temp items
- Validate item_number against alpha_numeric_punct rule, return JSON error on failure
- Add item_number_invalid language string
* i18n: reorder Items language keys and add item_number_invalid string
Add item_number_invalid translation across all locale files and
resort surrounding keys alphabetically to match key ordering
convention.
* PSR-12 refactoring.
- Change local variable to camelCase.
- Use single quote in language files.
* i18n: translate item_number_invalid string in ta, th, tl, zh-Hans
Item_number_invalid key had English placeholder text in Tamil,
Thai, Tagalog, Chinese Simplified language files. Translate to
match each locale.
* fix(items): use FormatRules for item_number validation
* refactor(items): use camelCase for variable names
* refactor(items): use camelCase for variable names in Items controller