lms

Bug description

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

Is your feature request related to a problem?

On the participation view (noticed it with modeling exercises) the table has an uncommon spacing as the space for the not displayed Presentation score is considered.
This has a negative effect on the responsive design, in the screencast you can see that the delete button is not shown even though there would be space for it.

Issue Summary

Enable Divi's "Defer jQuery And jQuery Migrate" theme setting results in the quiz results page accordion failing due to the LLMS inline JS which powers the accordion being loaded prior to jQuery. Disabling this setting results in normal functionality on this particular page.

Reproduction Steps

• HS-180509
• Create a quiz
• Enable show correct answer
• Take

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