Storage service helm chart integration + bugfixes (#315)

Add storage service and a persistent volume claim to helm charts. A few bugfixes for the api proxy.

storagesvc/client/storagesvc_test.go

@@ -96,5 +96,5 @@ func TestStorageService(t *testing.T) {
 	}
 
 	// cleanup /tmp
-	os.RemoveAll(fmt.Sprintf("/tmp/", testId))
+	os.RemoveAll(fmt.Sprintf("/tmp/%v", testId))
 }

storagesvc/storagesvc.go

@@ -132,6 +132,7 @@ func (ss *StorageService) deleteHandler(w http.ResponseWriter, r *http.Request)
 	fileId, err := ss.getIdFromRequest(r)
 	if err != nil {
 		http.Error(w, err.Error(), 400)
+		return
 	}
 
 	err = ss.container.RemoveItem(fileId)
@@ -148,6 +149,7 @@ func (ss *StorageService) downloadHandler(w http.ResponseWriter, r *http.Request
 	fileId, err := ss.getIdFromRequest(r)
 	if err != nil {
 		http.Error(w, err.Error(), 400)
+		return
 	}
 
 	// Get the file (called "item" in stow's jargon), open it,