Focus only focusable elements
Allow to trigger a focus update
Update watcher focus after watcher removal

After removing a watcher either the next available watcher or, if no watcher is available, the watcher selection is focused.
Select first available watcher or watcher selection on load
Hold focus on watcher selection
Merge pull request #1808 from opf/feature/14728_wrong_focus_when_deleting_watcher

[Feature] 14728 wrong focus when deleting watcher