AH-170.2 merged the particle- and checkpoint- actor into one.

The particles that are connected to a checkpoint will be removed when that checkpoint are taken. Also made the particles higher by adding more velocity in Y-axis, must be changed to how long they live instead and add a deviation to it.
AH-170.2 Max life deviation

Added function for the particles to get a deviation of how long time they live. Now every particle live to it's own max life instead of the systems max life that all shared before. Now it's only a middle point to set all particles max life.
Merge remote-tracking branch 'origin/master' into AH-170.2_Commenting_particle_system
AH-170.2 fine stuff before pushing to master