moving developer-only strings to api/common messages (#10258)

* 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

* Split api- and commonMessages

* fix test

* fix sanity

* merge messages to an object, rename commonMessage to errorMessage

* apiMessages -> apiError, commonMessages -> errorMessage, extract messages to separate objects

* fix test

* module.exports

website/common/script/libs/errorMessage.js

@@ -0,0 +1,16 @@
+// errorMessage(key) will be called by all common-ops , which is also imported to the website
+
+import _clone from 'lodash/clone';
+import _template from 'lodash/template';
+
+import messages from '../../errors/commonErrorMessages';
+
+export default function (msgKey, vars = {}) {
+  let message = messages[msgKey];
+  if (!message) throw new Error(`Error processing the common message "${msgKey}".`);
+
+  let clonedVars = vars ? _clone(vars) : {};
+
+  // TODO cache the result of template() ? More memory usage, faster output
+  return _template(message)(clonedVars);
+}