MDL-42495 lesson Prevent coding error for invalid user
MDL-41810 badges: Remove hardcoded references to backpack.openbadges.org
MDL-43401 mod_lesson: Fix serving of the pluginfile mediafile
MDL-43632 mod_feedback: Use SSL for reCAPTCHA API request if Moodle is using it
MDL-41693 group: Use standard layout for group related pages
MDL-39683 Messages, Themes: Fix "my" and "other person" message alignment in RTL mode (theme/clean)
MDL-39683 message: RTL alignment of messages in theme_base
MDL-39684 theme: RTL align of restrictions label in file manager
MDL-41362 theme_bootstrapbase: Alignment of User Selector controls
MDL-43693: assignment: Fix JS error on grading page.
MDL-40533 block_html: Remove styles specific to the block
MDL-43700 reports: Update to the sql in the comment locallib to include additional name fields.
MDL-39756 add advanced attachment options to essay question type

Adds a set of options to the essay question type which implement
the following new features:

-Adds an input format which accepts only file uploads, and no
 inline text.
-Adds an option to make the inline text response optional when
 attachments are enabled, so students can choose to upload
 an essay file.
-Adds an option to make attachments required, so essays without
 attachments will be marked incomplete.
MDL-43247 SCORM: improve pop-up handling and redirect to homepage on close.
MDL-42682 theme_bootstrapbase: fixed forum search alignment
MDL-42682 theme_bootstrapbase: fixed styling of discussion selector
MDL-43717 behat: Replacing 2050 for a date eariler than the max timestamp 32bit limit

All credit goes to Michael de Raadt.
MDL-43480 behat: Removing @_only_local tags from steps where it is not necessary
MDL-43480 behat: Switching @_only_local and @_alerts to @_file_upload and @_alert
MDL-43294 events: New Event for essay submission in lesson.