- first step to add save pe_geo and save pe_alg into network
- add an exploit directoru with simnet.py to exploit all type of
  simulation from simulnet ( pyray, location,...)
stash for update postiion into localization.py
- save localiation ok
- localization save added
- remain a bug of update localization in geometric cla
Merge branch 'newnet' into test

Conflicts:
	pylayers/location/localization.py
	pylayers/mobility/agent.py
	pylayers/network/communication.py
	pylayers/network/network.py
	pylayers/simul/simulnet.py
merging is now complete
- correct epwr and sens
- correct visibility
TODO
- choose ldp to posotioion
- robustify estpos from geometric positioning
- verbose option (boolean) in simulnet.ini
- ipython notebook simulnet vizualization compliant
save into Simul.runsimul method
bug fix
Merge branch 'test'

Conflicts:
	pylayers/network/communication.py
	pylayers/network/emsolver.py