repair pictures insertion and display

[mfrasca]

I hope I have not distributed this, but in the development version you cannot reliably insert pictures.
the files are copied, but the notes are not inserted.
moreover, the sorting is fine, but the picture are now aligned at the bottom, while I want them at the top of the vertical box. could repair this last one by adding an empty element and let it expand vertically.

[mfrasca]

it's not a new error, it came to light because I am working on a newly installed system, where I have a much shorter history of installing library modules.
https://coderwall.com/p/faqccw/pil-pillow-ioerror-decoder-jpeg-not-available
seems I need test for libjpeg-dev, like with pkg-config --cflags jpeg 2>/dev/null
and anyway without the ability to make thumbnails, ghini can still copy and show the picture file.

[mfrasca]

good enough - the pictures are aligned at the bottom, possibly acceptable