Deleted test file
Fixed the static addition of particles.
The dymanic part now is broken
Added color to the particle properties
Added axis for debug purposes
Fixed bug setting initial mass of a particle added on line.
Screen is redrawn correctly when adding new particle
Merge pull request #1 from jpujol/bug/0_SetRadiusInParticleCoordinates

[jpujol] Bug/0 set radius in particle coordinates