Release v1.1.0

Vertical rhythm and banner image scaling improvements, add image captions, blockquote and gutenberg block option, remove social media and OCHA Services custom links by default, update README

Added

• Blockquote and pullquote Gutenberg blocks CD-317
• Add instructions for the mobile logo to README CD-324

Fixed

• Vertical rhythm improvements CD-316
• Image captions for Featured images CD-318
• Banner image scaling CD-320

Changed

• Remove Related Platforms from OCHA Services menu by default. CD-319
• Remove Social Media icons from footer by default. CD-321
• Remove unused social Media menu definition CD_323