fix tinybox internal references

Allows tinybox to be used. 'TINY.box' was leftover from the original
source.
Add the Copy Link action element

This also adds the action for the Copy Link. When selected, it toggles
the display of of a text input that can be used to copy the URL that was
created.
remove Tinybox module (again)

This reverts 2675797.

A simpler solution for displaying the share URL was completed in
0bc3e0b.
don't add annotation label if SVG not supported