- Fixed bug causing attribute_id and item_id to not be properly assigned when empty() returns true.
- Fixed bug causing CSV Item import to not update barcode when changed in the import file.
- Corrected incorrect helper file references.
- Removed unused import
- Fixed saveAttributeValue() logic causing attribute_value to be updated to a value that already exists for a different attribute_id
- Corrected PHPdoc to include the correct return type
- Added updateAttributeValue() function as part of logic fix.
- Fixed bug preventing Category as dropdown functionality from working
Signed-off-by: objec <objecttothis@gmail.com>