Display Link Plus for Views Header / Footer

This module adds to the functionality of core's display_link views header / footer plugin in a number of ways:

• Performs an access check as part of the render process, so the link is only shown to users who can access the display
• Option to override the label
• Option to provide one or more classes to use on the link (for example, to format as a button)
• Option to render the display in the settings tray or modal dialog, and if either specify a width

This module aims to improve the admin UI by building in links to common tasks, within public-facing views. As such, it is similar to Add Content By Bundle and has a very similar implementation, though they address entirely different use cases.