Basic UI for Advanced Payments flows, along with all the necessary sagas and lambda functions.

The UI should include the following use cases:

• Listing all expenditures for a colony
• Creating an expenditure with single recipient
• Creating an expenditure with multiple recipients
• Displaying the details of a single expenditure
• Progressing an expenditure through different statuses: Draft, Locked, Finalized
• Editing an expenditure while in Draft status
• Funding the expenditure (TBC, from brief discussion with Alex and Arren we might want to add another UI-only expenditure status)
• Staking Expenditure extension support (more details to follow)

Rough screenshot of expected outcome (from the quick prototype): https://ibb.co/QfmsWtR