Change the measure model: less pre-determined, more configurable.

web/src/models.d.ts

@@ -18,11 +18,7 @@ export interface Measure {
   slug: string;
   name: string;
   description: string;
-  domainSource?: string;
-  domainUnites: string;
-  rangeSource?: string;
-  rangeUnits: string;
-  analysis: string[];
+  config: object;
 }
 
 export interface Measurement {