update trajectory.replay
add Trajectories.replay
(comes from convex branch)
Merge branch 'master' of github.com:pylayers/pylayers
fix in Gw (regression i.r.w. convex)
link all node in the same cycle (even if they are not in visibility)
modif TA-Office default
add logo
Merge branch 'master' of github.com:pylayers/pylayers
web url in notebook