WIP - Refs #17461 - Add Errata Plugin/Portlet
Refs #17461 - Cleanup AnnotatorPortlet JS code

- Cleanup AnnotatorPortlet JS implementation as it was moved to
  annotator repo as Errata annotator plugin.
Refs #17461 - Make inline comments portlet available also in edit mode

- Made inline comments portlet available also in edit mode
- Toggle button for Inline Comments portlet fullscreen in order to easily
  edit document and follow comments on it's text