create object for draggedObject (WIP)

THis is completely messy, and I have only to commit it because I have
to leave the computer.
make svg->getRoundDiffPos more generic
svg: Improve Point().distanceTo

Now this method uses getRoundDiffPos, so it should be obsolete
to call this at any other place.

Maybe getRoundDiffPos should now be integrated into the Point class?
Get LilyPond Object from textedit link WIP
create object for draggedObject (WIP)

THis is completely messy, and I have only to commit it because I have
to leave the computer.
svg draggableobject rewrite WIP

Heavily under work, commit just instead of stashing
editsvg.js: Clean up temporary stuff
editsvg.js: Question about coding
editsvg.js: Improve Point.distanceTo
editsvg.js: Add Point.toString()
editsvg.js: Restructure DraggableObject constructor
editsvg.js: DraggableObject, add some debug output

May be reverted later
editsvg.js: Rewrite MouseDown handler
editsvg.js: Rewrite MouseMove handler (WIP)
editsvg.js: Remove some merge conflict indicators
SVG view: Small fix

The svg2lily fetch doesn't work yet, so it is replaced by literal "text"
SVG-View: Point to problematic signal

I assume this signal hasn't been defined yet, and it causes an error.
svg-edit: Add Point.translate()
SVG-edit: Make DraggableObject an object (unclean)

This works for now, has to be cleaned up.
But I want the working version to be present in a commit...
svgedit.js: cleaning up