Update project's roadmap and mark items as done

[luisivan]

Idea

User story

We need to update https://aragon.org/project/roadmap/ and mark some items as done. Namely:

• Responsive view
• Local identity (custom labels)
• Finalize Planning Suite
• Upgrading apps from the UI
• Notifications & user feedback

We also need to remove these ones:

• aragonSDK: Split aragonUI and Lorikeet
• Native mobile app
• Incentivisation model for app developers

We also need to add items from the Aragon Black proposal (this will need coordination with @LouisGrx)

Technical requirements

• Design a "done" state for roadmap items

Frontend Implementation

PR

[ghost]

@luisivan @delfipolito I added the new label