add note about HSTS for chromium / chrome browsers, and note about /etc/hosts / hosts files

add a link for using non standard ports locally with firefox

add note about `chrome://components` for chromium based browsers

add notes about working with Chromium based browsers

update text in `_Sidebar.md`, and note about Bookmark Toolbar settings for Firefox.app on macOS

add note about working with Chromium based browsers

add note about listing bookmark numbers in firefox

add note about allowing extensions in incognito mode for google chrome

move brave browser notes to general web-browser-notes.md, update picture for current state of Neovim