Add tooltips to the following buttons/icons:
Tooltips on hover
- Help icon: Show help
- Selected radio button: Selected version
- Unselected radio button: Click to select this version
- Edit icon of a selected text box (black pencil): Click to edit this text
- Check mark: Apply your changes to this text
- Back arrow: Discard all your changes to this text
- Arrow down: Expand unchanged text
- Arrow up: Collapse unchanged text
Notes
- We will need to set the title option of the OOUI button widgets
- We will need to remember that those texts should be localized