Added landuse data and updated TimeSeriesTransform to CompositeTimeSeriesTransform

[sulays]

• Changed TimeSeriesTransform to CompositeTimeSeriesTransform as the config file included too many variables. "change": { "transform": { "allow_nulls": true, "library": "moja.flint.example.agri", "type": "CompositeTimeSeriesTransform", "data_property": "data_yearly", "vars": [ "landtype", "landuse", "management", "input"] } } This will written a DynamicObject variable with the vars as the keys.
• Added spatial land-use data in the SpatialTransform. SpatialTransform will return a DynamicObject which the BuildLandUnitModule uses to add data in the variables needed for LandUseModule.

[leitchy]

Walked through the code, looks good! I will merge now, and hopefully get to compile and run later in the week