Add OL and UL to QuoteBlock

[jamesbiggs]

About these changes

Adds the option for OL and UL in the QuoteBlock's quote field.

Stops ReviewBlock inheriting QuoteBlock (they became too different)

Before assigning to reviewer, please make sure you have

• Checked things thoroughly before handing over to reviewer
• Checked PR title starts with ticket number as per project conventions to help us keep track of changes
• Ensured that PR includes only commits relevant to the ticket
• Waited for all CI jobs to pass before requesting a review
• Added/updated tests and documentation where relevant

Merging PR guidance

Follow docs\developer-guide\contributing.md

Deployment guidance

Follow docs\infra\environments.md