- 
    Type:Feature Part 
- 
    Resolution: Done
- 
    Priority:L3 - Default 
- 
    Affects Version/s: None
- 
    Component/s: backend
AT:
- Documentation is updated
- The dashboard data structure for availableFilters is extended to include variables and their operator/values:
{
  ..., // other dashboard properties
  "availableFilters": [
    {
      "type": "state" // or "startDate" or "endDate"
    },
    {
      "type": "variable",
      "data": {
        "name" : "variable_Name",
        "type" : "string", // or boolean, number, date
        "data" : {...} // null for boolean and date type; same as report variable filter for number and string
      }
    },
    ...
  ]
}