Improvement: Auto-naming of transfer transactions

[zachgoll]

Right now, we're providing a "Description" field on the transfer form:

Instead, we should remove this field entirely and generate the name automatically on the backend when the transfer is created.

The name should be: Transfer from {originator} to {receiver} and should be based on the accounts that were selected.

This will:

1. Reduce input required from user
2. Be less generic, easier to understand