v4.5.1

Improvements

• admin: Upload fields show their copy and paste buttons before the upload and remove buttons, and show them and the drag handles of their files only on hover or focus, like inlined forms. The hidden buttons keep their space, so the table doesn't shift.
• admin: Open inlined forms show only their edit and remove buttons, like collapsed ones, and their other buttons on hover or focus. The hidden buttons keep their space, so the header doesn't shift.

Fixes

• admin: The suffixes of collapsible labels, e.g. from itemLabel(), show again and are clipped with an ellipsis, instead of running out of the label and widening the form.
• ui: Building the admin no longer warns about the deprecated Sass if() function.