[wip] Add a merge user draft
[wip] - draft on how to merge users
Add equality notion to `Profile` (based on the underlying `User`).
Merge events into the elected user.
Refactor: all collection merges can be implemented by incrementing an array with the name of the collection desired.
Add merge logic for all user associated collections
Solve merge conflicts
[wip] - note to self
Move twitter and photo from repeated users before remove them.
Merge pull request #76 from ricardovaleriano/user-merge-tool

User merge tool