* When toggling bulk editing, updating the page's title can help users,
especially screen reader users, to determine the current editing state
of the course homepage.
Most section related actions require the frontend to use alternative
strings depending on the format plugin lang file. This patch adds
overridden strings to the current setViewFormat course editor setup
object.
The course index is the first UI component that implements the new
drawers and the reactive components. The course index uses the course
state to present the current course structure and changes whenever
that structure change.
Huong Nguyen