Document merge request's semantic layout

Scope

Visual placement/layout of:

• Primary objects
• Local and global actions
• Attribute blocks of information

Deliverables

• WIP Figma file: https://www.figma.com/file/qlkP2NLpn0LIkHRub5oeuq/Issuables-semantic-grid-gitlab-design-1223?node-id=50%3A217
• Final Figma for docs: https://www.figma.com/file/shVF8UZwrQtkNfMDjcrsyH/Semantic-layouts?node-id=50%3A217

References

• https://kaiforsyth.com/portfolio/jira-new-issue-view/