Added left margin to icons causes layout issues in multiple pages

Verify the left margin is removed

1. login as admin
2. open the message drawer
3. click your own username to send yourself a message
4. hover over the emoji icon
5. Verify it is centred in the hover background (light gray)

navigation spacing in recentlyaccessedcourses block

1. Create some courses or use existing ones.
2. Enrol yourself to at least 2 courses
3. Add "Recently acessed courses" block to your Dashboard.
4. Verify there's a bit of space between the paging bar and the move icon: