float2int_rd for host

add host implementation for math::float2int_rd
Merge pull request #410 from psychocoderHPC/topic-float2intRd-forHost

Topic float2int rd for host
Close #381 Meta Information in Phase Space

Uses m_species * c to scale output for now.
(Previously it scaled by the electron mass.)

New Attributes:
  - exclusive offset of the global moving window
    if the spatial dimension is == y
  - [p_min;p_max] + unit
  - dr + unit (spatial dimension)
  - dt + unit (time step)
Remove Left Over Debug Message
Fix Units
simBox -> DomainInformation, namings spatial size/offset
Correct globalPS Size and movingWindow global Size

- add savety assert