In some places, we accidentally opened the same tag twice instead of
closing it, while in some other places we closed a tag without opening
it in the first place.
We've detected these issues thanks to the HTML Beautifier gem, which
we're about to start using for indentation purposes.
Apply new structure in the section that shows the comments icon together
with the number of comments so that it is easier to unify them into one
component.
Please note that we updated the comment-number class to comments-count
in order to simplify the css in the new component in the next commit.
