Updated Merch Copy & Paste to the new Multipage Format.

Copy your old Single Page Designs and paste them into the Multipage Forms or vice versa.

Changes 1.3 -> 1.4:

-Updated the copy & paste mechanics to fit into the new multipage format
"Paste from Single" paste Brand, Title, Bullets, Amount and Description that you copied before with
"Copy Table Content" from a Single Product Page.
In a Multipage Form, Amount is not pasted.

"Paste from Multi" paste Brand, Title, Bullets and Description that you copied before with "Copy Table Content" from a Multi Product Page.
Amount will not be pasted.

-removed "paste as hoodie" becouse shirt types are not allowed in the title anymore.