Fix #571 libPMacc limits: 32 bit host

on 32bit hosts, size_t is the same as uint32_t (hopefully)
which declares the `max` for it twice.

Reported by @sigkill on github, thanks!
Update to New Modules on Hypnos
Incooperate Richards Feedback
replace underscore by period to unify command line argument flags
add warning if slice is set wrongly
move warning from multi to single
rename file-name-variable from fieldName to fileName
treat unit conversion via templates
add fieldJ as template option to plugin
add author to copy right
add adjustments suggested by @ax3l

set unit output to float_64
change unit template to use Field:: class
add output to perform unit conversion
remove  cuSTL For loop as suggested by @ax3l
remove template specialization for SI conversion
add boolian flage to avoid notify in case of invalid slice
include for loop for slicing again
convert slice to double precision on GPU
allow access to field unit on GPUs
perform unit conversion on GPUs
remove unit factor from output
add and correct comments