Added input folders of new modules

fix typos and nomenclature

Macro trade modules

The code should now run. Some namechanges had to be corrected/reversed. These module additions do not affect the results. Further improvements will be commited at a later date.

This is part of a larger refactoring effort of the remind core. Here, code related to the trade of permits and primary energy carriers is moved from the core to the new module. Some renaming is required. For now only one module realization exists, 'standard', which corresponds exactly to what was in the core before. The results are not effected!

This is part of the larger refactoing of the core.

  - R packages are packages (that are loaded with the library()
    function)
  - REMIND is optimising scenarios, and not simulating anything
  - as this is intended for people newly coming to REMIND, we don't want
    to start out teaching them the wrong terms

add to model output tutorial

Changes for validation

separation of concerns.

bugfix 42c16b11: delete rest of use o…

Refactoring (cleaning)