Change File icon for "Only students with a link" to a chain link icon, not eye with slash

[troyer_591]

Anywhere in Canvas where there is an eye with slash icon, it means "not visible to students". This is true in course navigation and the grades. 

However, within Files I *hate, hate, hate* that the same icon (eye with slash) is reused and means "only students with the link" I would think that a link icon would be much clearer and less confusing.

[ProductPanda]

Comments from Instructure

As part of the new Ideas & Themes process, all ideas in Idea Conversations were reviewed by the Product Team. Any Idea that was associated with an identified theme was moved to the new Idea & Themes space. Any Idea that was not part of the move is being marked as Archived. This will preserve the history of the conversations while also letting Community members know that Instructure will not explore the request at this time.