added Affectors to the particleModel and to the manager. It is now possible to add only one affector to a particle, next commit it will be possible to add several affectors to a particle
trying to work with a list of affectors instead of only 1 affectors, the manager isnt working with this yet
created a function which contains the check of affectors
Merge branch 'master' of github.com:threkk/psibranch3irrlicht into ParticleAffectors
Loop throught list of affectors when checking for affectors
only the list of affectors can be used now, removed the single affector because the list can also contain 0,1 or more affectors
Merge pull request #13 from threkk/ParticleAffectors

Particle affectors for the Particle Editor