I18N EE JS boards index file

This is one of many MRs opened in order to improve the overall
internationalisation of the GitLab codebase.

This commit only targets Vanilla JS files.

i18n documentation
https://docs.gitlab.com/ee/development/i18n/externalization.html

app/assets/javascripts/boards/index.js

@@ -2,7 +2,7 @@ import $ from 'jquery';
 import Vue from 'vue';
 
 import Flash from '~/flash';
-import { __ } from '~/locale';
+import { s__, __ } from '~/locale';
 import '~/vue_shared/models/label';
 import '~/vue_shared/models/assignee';
 
@@ -235,7 +235,7 @@ export default () => {
       },
       computed: {
         buttonText() {
-          return this.canAdminList ? 'Edit board' : 'View scope';
+          return this.canAdminList ? s__('Boards|Edit board') : s__('Boards|View scope');
         },
         tooltipTitle() {
           return this.hasScope ? __("This board's scope is reduced") : '';

locale/gitlab.pot

@@ -1956,6 +1956,12 @@ msgstr ""
 msgid "Boards"
 msgstr ""
 
+msgid "Boards|Edit board"
+msgstr ""
+
+msgid "Boards|View scope"
+msgstr ""
+
 msgid "Branch %{branchName} was not found in this project's repository."
 msgstr ""
 
@@ -11959,6 +11965,12 @@ msgstr ""
 msgid "Sign-up restrictions"
 msgstr ""
 
+msgid "SignUp|Name is too long (maximum is %{max_length} characters)."
+msgstr ""
+
+msgid "SignUp|Username is too long (maximum is %{max_length} characters)."
+msgstr ""
+
 msgid "Signed in"
 msgstr ""