Document inserted at viewport when adjust_document is true #1088

[strang3nt]

Small edit that fixes #1088.
The commit makes it so that when adjust_document is on the PDF is positioned at current viewport instead of position zero.

[flxzt]

this kind of defeats the purpose of the "adjust document" option.

This would need to be implemented differently to reflect the desire to append to the existing document, either in a new option or by improving the positioning logic in some way

[strang3nt]

Ok I get it. I came up with the following two options:

1. Improve the positioning logic in such a way that if the document is not blank the pdf is appended, otherwise it has the current behavior (positioned at the top of the document)
2. add a new option ("Append to document" maybe) which, if toggled, appends the pdf at the very end of the document. This new option is below the adjust-document option, and it is toggle-able only if adjust document itself is toggled.

I personally prefer the second option, which seems clearer from a user perspective