Merge pull request #64 from openworm/neuromlpopulation

Neuromlpopulation
reset trees after stop
Merge branch 'development' of https://github.com/openworm/org.geppetto.simulation.git into development
Release 0.1.7
resets modified flag of entity and aspect nodes upon exit
send requestID for scene updates of visitor who started simulation, used
for testing purposes mainly
update pom.xml to new release
Merge branch 'development' of github.com:openworm/org.geppetto.simulation into development