Annotation tab/overlays should not be on by default

[buccalon]

When used together with canopy-iiif, the annotation view gets too crowded:

Suggestions:

• overlays should not be on by default
• annotations tab should not be open by default if information panel is set not enabled
• annotation text in tab should more obviously clickable

Sample manifest: https://samvera-labs.github.io/clover-iiif/docs/viewer/demo?iiif-content=https://iiif.tiju.ca/bnbr_sophia_60996/manifest.json