MDL-39607 theme: Update Moodle logo
MDL-44906 atto_collapse: Keep focus on the collapse button on toggle
MDL-44674 editor_atto: Remove the ability to prevent callback wrapping

The callback wrapping handles various important ARIA options and should not
be so easily preventable.
MDL-45123 atto_equation: improvements to ajax.php
MDL-45110 quiz responses : Notice when behaviour does not allow

multiple tries at a question
MDL-45023 quiz statistics report : refactoring of tests for code reuse
MDL-44778 editor_atto: added a border around the equation preview
MDL-44778 core_theme: added the well and well-small class to Base
MDL-45147 my: automate testing of block restriction
MDL-45010 mod_chat: Use H3 instead of H2 in recent activity info
MDL-40716 - Activity labels are not visible in course completion report, when in RTL mode (theme/clean , bootstrap)
MDL-44468 backup: use notification API

Replace a hardcoded div.notifyproblem with a API call that,
in Standard theme, outputs the same HTML.

Also removes the .notifyproblem class from the heading,
as that might cause problems for themers who expect it to be
used consistently with the API.
MDL-44468 backup: use  html_writer::div call

Simplify the renderer code with the new html_writer
div function.
MDL-45171 log reports: fix sql for cross support

Rules for cross-db support are:

- Always use the 'AS' keyword for columns.
- Never use the 'AS' keyword for tables/views.
MDL-45145 mod_quiz: ensure quiz cmid is set before triggering the 'attempt_deleted' event
MDL-45049 improve debugging output in error log for NO_DEBUG_DISPLAY scripts
MDL-45114 quiz simulate report : multi-choice multi qtype response data

fixing download.
MDL-45205 backup: avoid oracle incompatible query

Instead of aliasing column name with sql, use the backup API.
MDL-45138 Conditional availability: toggling AND/OR affects nested groups
MDL-42761 badges: Remove H2s from help popup