Nyall Dawson 49e9b613b8 [layouts] Keep a separate flag for whether only a subset of layers
are to be clipped from the project, instead of just tracking this
by the presence of any checked layers

Avoids inconsistencies between the layers which are visibly clipped
on the map vs the options which are set in the GUI.
2020-09-17 19:10:52 +10:00
..
2020-09-15 09:51:00 +02:00