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r_genFuel was not working. Trying to fix it, but now it works only for units that have one input commodity - the results will be wrong if there are mutliple. Needs to be fixed later. I also added flow based generation. So, r_genFuel should really be r_genSource

#107

Also some updates to 4d_postProcess_invest2schedule_temp.gms but using that for invest-schedule linking still doesn't really work with the dynamic generation portfolios.

Re-implementing dynamic generation portfolios (see issue #119). Unit investment variables still have the 't' dimension, although it is kind of redundant. Units have technical lifetimes (given in ut set) but links are assumed to stay in the system forever after they have been built. Cost discounting and multi-year horizons are considered in the objective function but not in the results outputting yet.

First working commit for the new inputs and outputs system. Probably buggy... In Google Drive there is 8unit system excel that works with this (vInputOutput.xlsx).

Adding the grid dimension to the reserve parameters and variables. Changes required to the input files. Removing the obsolete nuft set. Issue #69.

First tests, disabling all reserve requirement constraints except q_resDemand. Adding some new parameters and sets (df_reservesGroup, restypeDirectionGroup, restypeDirectionGridNodeGroup) and changing the dimensions of some other parameters, sets and variables.

*r_totalObj* is now recorded separately for each *tSolve* in order to allow better diagnostics of how the simulation proceeded.

Fixes to the diagnostic result vectors, as well as adding a command line argument to include them only when necessary.

Output reserve2reserve (included in r_reserve, but there is also separate r_reserve2Reserve that should show just reserve to reserve provision). Should be tested.

Note: Smoothing for ts_node is not implemented yet

Making "r_genUnittype" dimensions consistent with other result vectors, along with a minor performance improvement.

Renaming "df_nReserves" to "df_reserves", changing "mft_nReserves" to "ft_reservesFixed", as well as a lot of accompanying changes.

Activating two equations in the schedule model and adding the dummy capacity to ensure capacity margin equation feasibility to the results file.

* taking investment costs into account in cost results calculation
* adding transfer link investment possibility sets
* moving run-up and shutdown trajectories into their own 'blocks' to speed up the model
* commenting out some forecast related sets that are not used anymore
* updating info file writing

Added fixed operation and maintenance costs for investment options
Adding a new parameter unitOutputCapacityTotal to avoid division by zero
Added unit investment result parameter
Removed equation q_fixedGenCap1U
Added default value calculation for reserves update frequency
Moved tCounter update outside ms loop in 3c_periodicLoop.gms
Updated the limits of v_invest_LP and v_invest_MIP (no more maxGenCap, minGenCap)
Updated investInit_temp.gms
And some smaller updates

Reorganizing the result calculation to improve performance by moving all possible calculations to the end of the solveloop.

Implementing more results arrays again. Reserves, unit online time and approximate utilization rates.