Added redirect for non-secretariat users from ietf.secr.proceedings.views.select to ietf.meeting.views.materials.
Added a note to the secr upload_footer pointing to where material upload is now done.
Modified the links on the group meetings page to make it less likely to miss the link to the session materials.
Used class anchor target to clean up landing on the right session of multiple sessions on a group's session details page. Modified the materials page to only add a fragment asking for that anchor for non-ag/wg/rg groups.
Only show the link to the (now) secretariat-only proceedings manipulation page if the user is the secretariat. Relabelled the link to better reflect the page's remaining purpose.
Changed the session_details "Artifacts" panel header to "Agenda, Minutes, and Bluesheets". Added a footer to the "Slides" panel calling out drag-and-drop reordering.
Commit ready for merge.
- Legacy-Id: 12018
