Add FormData support for http utility

src/utils/http.js

@@ -10,10 +10,17 @@ const http = {
 
       const options = {
         method: method,
-        body: JSON.stringify(data),
         headers,
       }
 
+      if (data instanceof FormData) {
+        options.body = data;
+        delete options.headers['Accept'];
+        delete options.headers['Content-Type'];
+      } else {
+        options.body = JSON.stringify(data);
+      }
+
       if (method === 'GET') {
         delete options.body;
       }