Background

Maintable

The current context menu of a main table entry contains two copy preview options:

It also offers "Export to clipboard"

Preview Area

The context menu of the preview only offers copying HTML:

Task

In the context menu of the preview:

1. Rename "Copy preview" to "Copy citation (html)"
2. Add "Copy citation (text)"
3. Add "Export to clipboard"
4. Ensure that all three of these have the same functionality as the context menu in the main menu. If not, report back.