Partial lengths in the MEASURE tool

[NiklasErikssonOrebro]

In the new MEASURE tool, it would also be positive if partial lengths of lines and surfaces were also printed out. Today it is only the total length of a line or the total circumference of a surface is printed.
To distinguish segments with the total distance or circumference, segments could be printed in italics + underscores.

And if it is possible to do also do the same code to the DRAWER tool.

[michaelsund]

Implemented in the measurement tool.
#1549