Rendering only, widgets still global

It contains an offset bug but resulting draggables do position nicely

Add PDF generation helper to no-latex branch

See merge request zesje/zesje!11

...so pdfrw doesn't choke

...and add tests accordingly

...in preparation of introducing the PDF generation helper, otherwise
the naming would get confusing.

jest with react support boilerplate

See merge request zesje/zesje!10

Add some plumbing for pytest