- VERBOSE_LBL in basic mod: set the amount of output in the std
- Title: there is now a title with the version of the code

- introduce variables ngX_o2 = ngX/2 where X = p,j,z
- replace all ngX/2 call by a call to ngX_o2
- compiler should optimize it anyway but can we trust it?

-removed the parameters only modules
-simplified the names of the input namelists