feat: add es_419 and es_ES translations

[BryanttV]

Description

This PR adds translation support to the plugin. At the moment it only adds the translation to "Spanish (Latin America)" and "Spanish (Spain)".

How to Test

For this plugin to work properly you should have the following requirements:

1. Install tutor-forum plugin

2. Enable the plugin and run tutor config save

3. Build the tutor forum image: tutor images build forum

4. Install openedx-events in v9.0.0 or higher.

5. Install edx-platform with this branch

6. In your environment, configure the following settings. The following plugin is used as reference:

   name: settings
   version: 0.1.0
   patches:
       openedx-common-settings: |
         OPEN_EDX_FILTERS_CONFIG = {
           "org.openedx.learning.instructor.dashboard.render.started.v1": {
             "fail_silently": False,
             "pipeline": [
               "platform_plugin_forum_email_notifier.extensions.filters.AddInstructorNotifierTab",
             ]
           },
         }
         LOCALE_PATHS += ["/openedx/requirements/platform-plugin-forum-email-notifier/platform_plugin_forum_email_notifier/conf/locale"]
   

Afterwards:

Emails

1. Install this branch in your environment
2. Go to the discussions page
3. Create a new post
4. An email notification should be sent. Those can be found in the lms container in the folder: tmp/openedx/emails. You should see the email translated into your preferred language

Instructor Dashboard

1. Go to the instructor dashboard
2. Select the forum notifications tab
3. You should see all text translated into your preferred language

Screenshots

Emails

• Creation of a post

  

• Response of a post

  

• Comment of a post

  

• Digest

  

Instructor Dashboard

[mariajgrimaldi]

cc @Ian2012: before merging, we need to try adding LOCALE_PATH as part of the plugin settings, so no additional configuration is needed.

[mariajgrimaldi]

LGTM! Thanks