error in DOC-LayoutEditor
merging
modif in rays.py
Merge branch 'master' of https://github.com/pylayers/pylayers
change details in layout
adding test multiwall
fixing figure in simulation notebook
clear notebook
Merge branch 'master' into signature

Conflicts:
	notebook/DEV_PyRT1.ipynb
	notebook/DOC-LayoutEditor.ipynb
	pylayers/gis/layout.py
modif in furniture.py
Merge branch 'master' of https://github.com/pylayers/pylayers into signature
few modif
Merge branch 'master' of https://github.com/pylayers/pylayers
Merge branch 'signature'
delete notebook