* Fix flaky transfer e2e test

- If tests ran too fast, the transactions wouldn't finish rendering
  before the select of the transactions was attempted.

* Add release note

* Adds option to make a transfer from two selected transactions

- Transactions amount must match
- Transactions must be from different accounts
- Split transactions not eligible

Closes #944, closes #532. ~WIP because something is causing the test
budget to fail to create because it’s using INSERT instead of UPDATE sql
queries. (Or not? I have no idea)~