feat: Add language selector

Closes #212

client/src/locales/en/core.js

@@ -64,6 +64,7 @@ export default {
       deleteTask_title: 'Delete Task',
       deleteUser_title: 'Delete User',
       description: 'Description',
+      detectAutomatically: 'Detect automatically',
       dropFileToUpload: 'Drop file to upload',
       editAttachment_title: 'Edit Attachment',
       editAvatar_title: 'Edit Avatar',
@@ -90,6 +91,7 @@ export default {
       hours: 'Hours',
       invalidCurrentPassword: 'Invalid current password',
       labels: 'Labels',
+      language: 'Language',
       leaveBoard_title: 'Leave Board',
       leaveProject_title: 'Leave Project',
       list: 'List',

client/src/locales/en/index.js

@@ -0,0 +1,11 @@
+import merge from 'lodash/merge';
+
+import login from './login';
+import core from './core';
+
+export default {
+  language: 'en',
+  country: 'us',
+  name: 'English',
+  embeddedLocale: merge(login, core),
+};