Add a "Merge with" button

[slamkajs]

Create a backbone view that displays a button whcih opens a person finder. When a person is selected, it ten asks how the data should be merged.

• Overwrite [searched person]'s data with [current person]'s data?
• Discard [current person]'s data?
• Fill in blank data on [searched person]'s record with [current person]'s data?

This functionality would move all current activities from [current person] to [searched person].