Don't include translations if they are all blank

src/components/flow/actions/localization/MsgLocalizationForm.tsx

@@ -136,10 +136,20 @@ export default class MsgLocalizationForm extends React.Component<
         Object.keys(this.state.params).forEach((key: any) => {
           const component = components.find((c: any) => c.name === key);
           if (component) {
-            localizations.push({
-              uuid: component.uuid,
-              translations: { params: this.state.params[key] }
-            });
+            const params = this.state.params[key];
+
+            // if each string in params is empty string, set params to null
+            if (params.every((p: string) => p.trim() === '')) {
+              localizations.push({
+                uuid: component.uuid,
+                translations: null
+              });
+            } else {
+              localizations.push({
+                uuid: component.uuid,
+                translations: { params }
+              });
+            }
           }
         });
       }

src/components/flow/actions/sendmsg/SendMsgForm.tsx

@@ -17,11 +17,9 @@ import SelectElement, { SelectOption } from 'components/form/select/SelectElemen
 import TextInputElement from 'components/form/textinput/TextInputElement';
 import TypeList from 'components/nodeeditor/TypeList';
 import { fakePropType } from 'config/ConfigProvider';
-// import { fetchAsset } from 'external';
 import { TemplateTranslation } from 'flowTypes';
 import mutate from 'immutability-helper';
 import * as React from 'react';
-// import { Asset } from 'store/flowContext';
 import {
   FormState,
   mergeForm,