PillarToMic converter is sensitive to file path

[Ducasse]

PillarToMic converter should handle path the same way. There was not difference between file://figures/Foo.png and and figure/Foo.png

+Two messages: ==Color yellow== and ==aMorph color: Color yellow==.>/figures/uKeyUnOne.png|label=fig:ellipse|width=50+

+Two messages: ==Color yellow== and ==aMorph color: Color yellow==.>file://figures/uKeyUnOne.png|label=fig:ellipse|width=50+

Should both produce figures/uKeyUnOne.png

![Two messages: `Color yellow` and `aMorph color: Color yellow`.](figures/uKeyUnOne.png label=fig:ellipse&width=50)