restore dcs in Body._show3
- simulnet save now add meta information into hdf5 file including
agent ID and agent name
- Trajectory/Trajectories classes are compliant with new simulnet save
(upcoming consequence: name of agent has to be the name of a body file
for
further exploitation in simultraj)

 Please enter the commit message for your changes. Lines starting
remove ID from saveh5 dataframe
bug fix in Trajectories load
improvements in link class
- add a 'force' parameter to eval to force to re-evaluate objects and
  erase previous evaluations
- various bug fix
bug fix with new version of multiwal/coverage, which caused crach in
simulnet
minor improvement in __repr__
new default agent.ini
mobility improvement to make the link from simulnet to simultraj easier
default conv_vecarr dimension modified
resolve a bug which make simulnet crash (due to recent modif in
multiwall)
improve HF5 save of simulnet
add comments in trajectory.py
adding angleonlink3 (to be tested)
bug in bsignal extract
delete extra char
modif ion multiwall
Merge branch 'master' of github.com:pylayers/pylayers
modifying generate and __repr__ in trajectory