Node edit bug when units is set to centimeters

[GoogleCodeExporter]

What steps will reproduce the problem?
1.Change the units to centimeters
2.Create a path
3.Try to edit nodes

What is the expected output? What do you see instead?
-the nodes dont move

In what browser did you experience this problem? (ALL, Firefox, Opera, etc)
-chrome and FF

In what version of SVG-edit does the problem occur? (Latest trunk, 2.5.1,
etc)
2.6

Original issue reported on code.google.com by anderso...@gmail.com on 6 Feb 2013 at 11:33

[GoogleCodeExporter]

I tried this using SVG-edit 2.6 in Firefox 20.0.1 and was able to reproduce the 
bug. When units are in any units besides pixels (not just centimeters), 
clicking and dragging path nodes doesn't move them. However, clicking on a node 
to highlight a path arc and then dragging the arc will move the node--which 
isn't possible when using pixels.

Original comment by suzumiya...@gmail.com on 14 Apr 2013 at 9:02

[GoogleCodeExporter]

I tried SVG-edit 2.6 on MacOSX 10.8.3 (Chrome: Version 28.0.1500.29 beta, 
Safari:Version 6.0.4 (8536.29.13), and FF 21.0) and was able to reproduce the 
bug. The behavior was similar to what suzumiya reported.

In Unit pixel mode: able to click and drag path nodes directly to move them. 
Not able to click and highlight a path, then click somewhere else to modify the 
path.

In any other mode (centimeter, points, etc etc): able to highlight a part of 
the path, then click anywhere other than the path, and the highlighted portion 
will move. Not able to just click and drag the path nodes to move them.

Original comment by kon...@gmail.com on 22 Jun 2013 at 7:38