[ENH] Canvas: Improve preview rendering#2784

Merged

astaric merged 2 commits intobiolab:masterfrom

ales-erjavec:canvas/preview-rendering

Dec 20, 2017

Commits on Nov 20, 2017

canvas/preview: Render preview icons without writing it out to disk
ales-erjavec
committed
canvas/preview: Strip properties from the .ows when rendering previews
ales-erjavec
committed