Set focus to editable if user click on html element.
Fixed code style.
Changelog entry.
Merge branch 't/10945'
Change changelog entry.
Block attributes will not any more get propagated to the panel holder iframe.
Cleanup the way the inner block element a11y attributes are set.
Made the float panel focus the float block element when opening it.
Avoid the color buttons focusing the editable when being opened.
Avoid scrolling on Chrome when opening dropdowns.