User comment style for using various pages of components (like blog,
tweets, etc) that feature a left- or right-aligned avatar avatar-lgalongside
textual content. You can use the basic class
A comment can contain an image or avatar
A comment can contain metadata about the comment, an arbitrary amount of metadata may be defined.
A comment can contain an list of actions a user may perform related to this comment.
A comment can contain a form to reply to a comment. This may have arbitrary content.