ui.gadgets.editors: add editor-constrained-dim function to editor
ui.gadgets.editors: add editor-constrained-dim function to editor

This function allows the calculation of dimensions with respect
to min/max-row/column values.

mrjbq7/factor,bpollack/factor,tgunr/factor,bpollack/factor,bpollack/factor,factor/factor,factor/factor,bjourne/factor,AlexIljin/factor,factor/factor,mrjbq7/factor,bjourne/factor,mrjbq7/factor,AlexIljin/factor,AlexIljin/factor,tgunr/factor,tgunr/factor,tgunr/factor,bpollack/factor,factor/factor,factor/factor,bjourne/factor,bjourne/factor,bjourne/factor,bpollack/factor,bjourne/factor,factor/factor,mrjbq7/factor,tgunr/factor,mrjbq7/factor,bpollack/factor,AlexIljin/factor,AlexIljin/factor,bjourne/factor,bpollack/factor,AlexIljin/factor,tgunr/factor,mrjbq7/factor,AlexIljin/factor