map_modificator: modifcate the map based on vis inputs
In MalditoBarbudo/IFNappkg: Shiny modules and helpers for IFNapp

this returns the leaflet proxy object to modify the map

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map_modificator(data_scenario, scenario, ifn, inverse_pal, color, mida,
  tipo_grup_func, grup_func, statistic, admin_div, agg_level, ifndb,
  updateProgress = NULL)

`data_scenario`	tbl_sql object
`scenario`	character indicating the scenario
`ifn`	Input
`inverse_pal`	Input
`color`	Input
`mida`	Input
`tipo_grup_func`	Input
`grup_func`	Input
`statistic`	Input
`ifndb`	pool object to access the ifn db
`updateProgress`	progress function to monitorize the map drawing