fix: correct catalog purchase field name and swap api method mappings

- Rename saleline_set to catalogsaleline_set in catalog purchase payload
- Fix swapped createPurchase/createCatalogPurchase method calls in Api class
- Format http.js (indentation, quotes, trailing commas)

src/services/api.js

@@ -32,11 +32,11 @@ class Api {
     }
 
     createPurchase(purchase) {
-        return this.apiImplementation.createCatalogPurchase(purchase);
+        return this.apiImplementation.createPurchase(purchase);
     }
 
     createCatalogPurchase(purchase) {
-        return this.apiImplementation.createPurchase(purchase);
+        return this.apiImplementation.createCatalogPurchase(purchase);
     }
 
     createReconciliationJar(reconciliation) {