Update Download All Materials to include externally hosted resources and/or HTML content

[kwcoffman]

From: Kathleen Ludewig Omollo
Was: https://www.umms.med.umich.edu/it.jira/browse/OERDRUPAL-94

For the externally-hosted resources, would it be possible to download the link (e.g. as text file) so people have some reference to those files in the zip file? Chris Chapman recently made a comment about the videos (and audio) being notably absent from the zip file, without any pointers or explanation.

Right now when a user downloads everything, all the content embedded in the HTML does not come with the materials in the zip file. I think that needs to change because we add important things in the sessions and overview. Please add an issue to JIRA for this - it should be addressed.

Pieter Kleymeer:
I can't think of a good workaround right now except for putting the links into a material file OR saving all the HTML pages manually and uploading them into the materials section...

I see two separate issues here:

1. we embed content within the html of nodes in Drupal such as the sessions tab or even the sliders in the overview tab. this content should be downloaded along with the materials.
2. we include links to youtube videos, archive.org audio recordings, etc. in the materials tab. these links need to be somehow added to the set of content that's downloaded when using the "download all" button.

I see one easy solution:

• include an export of the RSS feed for the course/resource with the download. The RSS feed already includes all this information, so we should just make sure that it goes with the download package - that way the license, metadata, and extra HTML-embedded content goes with the zip file.