VS Code made a change (or a new bug) that focuses the quickpick container rather than the input if the quick pick is disabled when it is shown

- updates access content to match home view
- adds placement attr to popover component

- adds search history hint in search placeholder
- adds `@me` filter to search helper

In case of multiple cursors (selections) in the same line, an
annotation was created per selection, resulting in an odd experience.
Filter out duplicated lines by the line number.

Add author to CHANGELOG and README

Fixes: #2346

Refs #1606