Updating Backbone inputData.gdx to Spine Toolbox specification and Spine Toolbox to Backbone specification

Including an example for changing the maximum page width in the 4d_postProcess_invest2schedule_temp.gms.

Including an example for changing the field width of set label output in the 4d_postProcess_invest2schedule_temp.gms.

Issue #137

Dev fix #130 132

See merge request !10

Converting from 1.2 to 1.3: include p_gn(grid,node,'nodeBalance')=1 for grid-nodes that don't have values in ts_priceChange.

Changing the interpretation of unitUnitEffLevel. The model was reading the input data so that 'effLevel to start aggregation' meant the start of the next level (e.g. using level3 resulted in the last time step of level3 in the internal parameter lastStepNotAggregated - in effect pointing to the start of Level4). Now this is read so that level3 means the start of level3

integrate output filename to backbone.gms

See merge request !9

This reverts commit 3af56139.

Addin an import mapping for getting Backbone inputdata.gdx into Spine Toolbox as a Spine Data Store. This is initial commit - changes are very likely as we figure out the best structure for Backbone data in Spine Toolbox.

new parameters added to p_groupPolicy to allow for selection of static and/or dynamic inertia constraints