feat: Organize sidebar (#1834)

* chore: Flip chinese label in language select

* feat: Add settings to sidebar, organize secondary items to bottom

app/components/Sidebar/components/Section.js

@@ -7,6 +7,7 @@ const Section = styled(Flex)`
   flex-direction: column;
   margin: 24px 8px;
   min-width: ${(props) => props.theme.sidebarMinWidth}px;
+  flex-shrink: 0;
 `;
 
 export default Section;