Insertfigures temporary solution

A solution that works for the moment, but should be polished
changes related to images
Merge branch 'master' of https://github.com/Notalib/nota.oxygen

Conflicts:
	addins/frameworks/xhtmlepub/xhtmlepub.framework
	addins/src/nota/oxygen/epub/figures/InsertFigureOperation.java
	addins/src/nota/oxygen/epub/figures/InsertFiguresOperation.java
changes related to images
images more
Merge pull request #34 from ybk/master

images more
nota-782 ready for testing
Some minor improvements to the image/figure insertion operations
Merge pull request #36 from oleholstandersen/nota-782

Nota 782
Merge remote-tracking branch 'notalib/master' into nota-790