Simplify the 'change page' and 'relink document' workflows of placed PDF drawings

[#1]

When a PDF file changes (more pages are added/removed) or be duplicated, currently, to relink to another page, users need to relink the entire file, by finding the source of the PDF file and going through the -place drawing process again. To simplfy the PDF workflows with less clicks, Archicad users can move easily and relink to another page without having to relink the original file on the Layout, Worksheet or Plan by using the Drawing tool and not the Drawing Manager.