fix documentation
improve ParticleDescription

add support for particle description that we can use single types or sequences some template parameter
fix add empty flags for species
use keV as output energy
extended help messages in gol
Added Comments to gol
heeded the advices in the pull request about the comments
added shorthand input -p for --periodic
removed solved question from Evolution.hpp
update license

update year
add my name
correct year used in license
fix license years and names alignment
refactor min max energy handling

all CPU values are now in keV
concert to PIConGPU units only before kernel call
update comments
add pragma once
add comments to kernel
comment CPU part of EnergyParticles
update license EnergyParticles
add pragma once to EnergyParticles plugin
correct number of ints in global memory
add white space