A template that builds a panel, a div of content that has a heading and a body.
- body text of the panel
- heading text of the panel
- optional class(s) that are applied to the div that constitutes the panel
- optional class(s) that are applied to the div that wraps the div of the panel-body
A Panel is currently unstyled in the wiki, but external snapshots take advantage of the div wrappings.