moving developer-only strings to api messages (#10188)

* move translatable string to apiMessages

* use apiMessages instead of res.t for groupIdRequired / keepOrRemove

* move pageMustBeNumber to apiMessages

* change apimessages

* move missingKeyParam to apiMessages

* move more strings to apiMessages

* fix lint

* revert lodash imports to fix tests

* fix webhook test

* fix test

* rollback key change of `keepOrRemove`

* remove unneeded `req.language` param

*  extract more messages from i18n

* add missing `missingTypeParam` message

test/api/v3/integration/user/stats/POST-user_allocate.test.js

@@ -2,6 +2,7 @@ import {
   generateUser,
   translate as t,
 } from '../../../../../helpers/api-integration/v3';
+import apiMessages from '../../../../../../website/server/libs/apiMessages';
 
 describe('POST /user/allocate', () => {
   let user;
@@ -17,7 +18,7 @@ describe('POST /user/allocate', () => {
       .to.eventually.be.rejected.and.eql({
         code: 400,
         error: 'BadRequest',
-        message: t('invalidAttribute', {attr: 'invalid'}),
+        message: apiMessages('invalidAttribute', {attr: 'invalid'}),
       });
   });