* v5: Redo blockquote attributions

- Renames -small-* variables to -footer-*
- Updates blockquote demos with attribution to place it outside the blockquote with a figure wrapper

* Updated class name

* docs(examples): refactor blockquotes in masonry example

Co-authored-by: Gaël Poupard <gael.poupard@orange.com>
Co-authored-by: XhmikosR <xhmikosr@gmail.com>