Added support for importing XLS (Excel) files.

Added support for importing XLS (Excel) files.
Download available:
-Products
- Store categories
- Shop collections
- Manufacturers Store
- Articles
- Bases of e-mail addresses
- Forwarding list.

Added support for importing XLS (Excel) files.

To ensure the security of the Hotlsit.biz platform, the servers have been moved.
Added automatic cell matching recognition when importing categories, manufacturers and collections.
Interface Update: Responsive Style for the Cart Table