Remaining prototype tasks MIPS/ATLAS

[CallmeT-ty]

https://www.notion.so/makerdao-ses/Atlas-v2-Dashboard-Quality-Assurance-e7c3bce0e36042af99cfdc5b08dfa1df

• [ ] - Optimize Atlas Portal collapse/expand functionality
• [x] - Bring back the Atlas Portal sidebar with ToC
• [x] - Mobile improvement for Atlas Portal

[CallmeT-ty]

@ryanwolhuter these are all finished right?

[ryanwolhuter]

@CallmeT-ty yes all done, the new ones are being tracked here so we can perhaps just keep this ticket and link to the notion page