lms

Bug description

After account registration, the "Account activation" email includes incorrect links to example.com. See orange boxes here:

How to reproduce

1. Launch a production platform
2. Create an account
3. Check the "Sign in" and the logo links i

Is your feature request related to a problem? Please describe.
We can't send emails without using postmark service

Describe the solution you'd like
Allow using local sendmail command to send emails

Describe alternatives you've considered
Allowing to use an smtp server directly would be another option

Additional context
Action Mailer already supports these methods, so w

Checklist

General

• I tested all changes and their related features with all corresponding user types on a test server.
• This is a small issue that I tested locally and was confirmed by another developer on a test server.
• Language: I followed the [guidelines for inclusive, diversity-sensitive, and appreciative language](https://docs.artemis.ase.in.tum.de/dev/g

Maybe we can take this occasion to add a the documentation to this filter?

Originally posted by @eri-trabiccolo in gocodebox/lifterlms#1946 (comment)

Document the llms_new_{$this->model_post_type} filter in LLMS_Post_Model::create().

The most recent full CI build (at the time of this writing) failed due to connection refused, but it was just transient (manually browsed the site and confirmed it worked). We should add some retries to the full CI's smoke test code so that these transient failures wouldn't cause full CI failures. Relevant code is [here](https://github.com/Azu

This will allow to link tags like #class_a to a students.
Later we will be able to filter users using these tags.

For now, let's allow only the moderators to view the tags (not even the user himself).
This will allow the moderator to create private tags such as #fast_student or #needs_more_attention