feat(leng): add leng.

client/src/containers/Sales/Invoices/InvoiceForm/InvoiceFormFooter.js

@@ -12,7 +12,7 @@ import { inputIntent } from 'utils';
 export default function InvoiceFormFooter() {
   return (
     <div className={classNames(CLASSES.PAGE_FORM_FOOTER)}>
-      <Postbox title={'Invoice details'} defaultOpen={false}>
+      <Postbox title={<T id={'invoice_details'} />} defaultOpen={false}>
         <Row>
           <Col md={8}>
             {/* --------- Invoice message --------- */}
@@ -47,7 +47,7 @@ export default function InvoiceFormFooter() {
               initialFiles={[]}
               // onDrop={handleDropFiles}
               // onDeleteFile={handleDeleteFile}
-              hint={'Attachments: Maxiumum size: 20MB'}
+              hint={<T id={'attachments_maximum'} />}
             />
           </Col>
         </Row>

client/src/containers/Sales/Invoices/InvoiceForm/InvoiceFormHeader.js

@@ -2,6 +2,7 @@ import React, { useMemo } from 'react';
 import classNames from 'classnames';
 import { sumBy } from 'lodash';
 import { useFormikContext } from 'formik';
+import { formatMessage } from 'services/intl';
 
 import { CLASSES } from 'common/classes';
 import InvoiceFormHeaderFields from './InvoiceFormHeaderFields';
@@ -21,15 +22,16 @@ function InvoiceFormHeader({
   const { values } = useFormikContext();
 
   // Calculate the total due amount of invoice entries.
-  const totalDueAmount = useMemo(() => sumBy(values.entries, 'total'), [
-    values.entries,
-  ]);
+  const totalDueAmount = useMemo(
+    () => sumBy(values.entries, 'total'),
+    [values.entries],
+  );
 
   return (
     <div className={classNames(CLASSES.PAGE_FORM_HEADER)}>
       <InvoiceFormHeaderFields />
       <PageFormBigNumber
-        label={'Due Amount'}
+        label={formatMessage({ id: 'due_amount' })}
         amount={totalDueAmount}
         currencyCode={baseCurrency}
       />

client/src/containers/Sales/Invoices/InvoiceForm/InvoiceFormHeaderFields.js

@@ -168,7 +168,7 @@ function InvoiceFormHeaderFields({
                 }}
                 tooltip={true}
                 tooltipProps={{
-                  content: 'Setting your auto-generated invoice number',
+                  content: <T id={'setting_your_auto_generated_invoice_number'}/>,
                   position: Position.BOTTOM_LEFT,
                 }}
               />