Anchor's link should follow image contour

[bmaggi]

Currently anchor are following an invisible square instead of the image.

The problem is probably in the svg files that need to be edited and the path should be set correctly to follow the image.

(This can probably be done using Inkscape)

[bmaggi]

In theory, it may be achieved using:

• a custom path in svg file with id="PapyrusPath"
• css option: followSVGSymbol: true;