Started restart-plugin system
Move hdf5 restart capability to HDF5Writer
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
Remove unused SimRestartInit. and add comments
Merge branch 'topic-pluginsRestart' into topic-pluginsRestart2

Conflicts:
	src/picongpu/include/plugins/hdf5/HDF5Writer.hpp
Fix testing code
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
Fix InitPluginNone
update license

update year
add my name
correct year used in license
Transfer changes from libsplash splash2xdmf to work with pic2xdmf
Split HDF5Writer into subfiles/classes
Add comments to main