use intersector (ids) in calculation of upscaling

at the moment, ids are supposed to be contiguous, this does not need to be the case for case when weights are read.

assigned to @thober

see line 51 ff. in mpr_data_array_upscale.mod.f90:

    ! TODO: the ids are consecutive for the current implementation, so array of indices is not directly used
    ! replace: current_array(current_start:current_end) by current_array(ids(1:subcells(iS), iS))

created branch 20-use-intersector-ids-in-calculation-of-upscaling

okay, this now moved to mpr_data_array_upscale_dim_mod.f90 , line 96ff. For issue #19 (closed) (compatibility with Naokis weight files), I think we have to pack ids and weights, so they are 1D and the length of the vector corresponds to the sum of subcells. Maybe you better wait with this issue until I did the #19 (closed).

closed with commit e7e73963

closed