fixed bug: import was missing

Signed-off-by: Stephan Richter <s.richter@srsoftware.de>

frontend/src/routes/stock/Index.svelte

@@ -145,7 +145,6 @@
             error(res);
             return null;
         }
-
     }
 
     async function loadProperties(){

frontend/src/routes/stock/Locations.svelte

@@ -1,5 +1,5 @@
 <script>
-    import { api, get } from '../../urls.svelte';
+    import { api, get, post } from '../../urls.svelte';
     import { error, yikes }   from '../../warn.svelte';
     import { t }              from '../../translations.svelte';