The autosave is reset on form submission, but if that form submission
happens at the same time as a page reload, the connection and/or server
is slow, then the connection may be aborted before the session is
removed.
This commit changes the autosave reset to use the fetch() API with a
keepalive flag.
Unfortunately we do not have a formal endpoint for this in Moodle JS so
this is a hackier approach than I would like. MDL-76463 has been opened
to investigate this.
This commit also fixes a situation where the autosave content is re-sent
when the user has typed in the editor and their next action is to click
on the submit button. This is now blocked for that editor instance.
Atto mixed vertical and horizontal alignment into a single selection,
which does not make any sense. It also used CSS classes in such a way
that those styles will break if/when Atto is removed.
This commit:
* removes the horizontal alignment from the dropdown - these are easily
achieved using the existing Tiny UI
* addresses a bug where existing styles (like horizontal alignment) were
not preserved when editing the image
* fixes a bug where the CSS selector was used instead of a CSS class
name
* recognises legacy TinyMCE class names and replaces these
* switches from using random class names to using Bootstrap class
utility classes for vertical alignment.
Jun Pataleta