Use better insertion point for GDocs PIA notice
Use better insertion point for GDocs PIA notice

Previously, the notice disappears after the user authorizes Google Docs.
The #google_docs_description element is better because it is always
present, both pre- and post-authorization.

grahamb/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,grahamb/canvas-lms,sfu/canvas-lms,grahamb/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,va7map/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,va7map/canvas-lms,va7map/canvas-lms,grahamb/canvas-lms,grahamb/canvas-lms,va7map/canvas-lms