Update organisation logos

[MartinJJones]

What

• The logos organisation have been updated to reflect what will be the most up-to-date organisation crests
• Images that previously had a height of 52px, now have a height of 64px
• Optimized the images

Why

• The designs for the organisation logos have been updated
• The reason for the change in logo height, is that the logo height is set to 32px in the CSS, using 64px as the height will help ensure we serve a 2x image as intended. No change is needed for images that are 68px in height as they have a height of 34px in the CSS
• Images optimized to help ensure the file size is comparable to the existing organisation logos. Using the organisations page as an example the image size increased from 25.5KB to 52.9KB without any optimization. After optimizing the images the total size of images on the is 27.4KB.

Trello card

Visual Changes

• There are visual changes in Percy which need to be approved, the changes all relate to the updated crests used for the organisations
• The image optimization has been done as a separate commit to allow for comparison of the optimized vs original logo image
• You can also preview the new organisation logos used in the Heroku preview app - https://components-gem-pr-4295.herokuapp.com/component-guide/organisation_logo

Further information

Before	After	Comments	Live page example
		Updates all organisation logos that use the Royal Coat of Arms	Cabinet Office
		Crest is also used on UKEF	DBT / UKEF
			Home Office
			MoD
			Wales Office
			Office of the Advocate General for Scotland / Scotland Office
		portcullis crest	Office of the Leader of the House of Commons / Office of the Leader of the House of Lords

Other crests not updated as part of this change

Crest	Example page
ukho_18px_x2.png	UKHO
coastguard_18px_x2.png	NA
ukaea_crest_18px_x2.png	UKAEA
bis_crest_18px_x2.png	BIS

• HM Branding Guidelines

[nnagewad]

From a visual standpoint, it all looks good :)

[hannalaakso]

This looks good to me, I've reviewed it using collections across individual organisation pages and the index one. I've also checked on mobile devices and other supported browsers.

[nnagewad]

Looks good. Especially after updating the portcullis. 👍🏽