A quid is a slang term for the British pound. So currently, 1000 quid (or 1000 pounds) is about $1500 US dollars.
Sidebar is a theme feature introduced with Version 2.2. It's basically a vertical column provided by a theme for displaying information other than the main content of the web page. Themes usually provide at least one sidebar at the left or right of the content.
Viewing and hiding parts of the user interface. Keyboard Shortcut. Description. Show/Hide the sidebar in the browser mode. The sidebar contains the folder tree and the file properties summary (if enabled). Show the file properties summary. Shows/hides the thumbnail pane in the viewer mode. or.