Implement delete of transfer transactions

[nazrinharris]

A couple things to be done. Basically a different bottom sheet, mostly similar to the transaction one, but a different callback for deletion. Maybe have it show the corresponding transaction on the other account.

Deed

• [x] Create a deleteTransferTransaction method which will delete the current transaction and its linked transaction.
  • [x] From dao to usecase
• [x] Create a TransferTxnBottomSheet
  • [x] Make the UI nicer
  • [x] Update the callback to the deleteTransferTransaction provider
  • [x] Add dialog listener and update the dialog to show proper message

Secondary Deed

• [x] Rename TransactionListTile and TransferTransactionListTile to TxnListTile and TransferTxnListTile
• [x] Update TxnListTile to look as nice as TransferTxnListTile

[nazrinharris]

Should be completed with 8111f5a in #37