fix jsmod
modified MPIData_ptr_Free
refactor JSMod
remove cstyle.float package because it is duplicated
Merge pull request #403 from wakamori/remove_duplicated_package

remove cstyle.float package because it is duplicated
Merge pull request #400 from tetsurom/JSFix

fix jsmod
Merge pull request #401 from takeoonoda/mpi

modified MPIData_ptr_Free
fix a bug on JS module
Add some functions to JavaScript.Document
Merge pull request #404 from tetsurom/JSFix

JS fix