Allow comment lines in SIS upload files

[reynlds]

We'd appreciate the ability to add comment lines in our SIS upload files. This is desirable to us for a variety of reasons including:  creating SIS file templates for manual upload, generating log entries as comments within the SIS files during our automated assembly processes, etc. Thanks.

[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.