Consistent with #12421 which highlights the transaction after send.
<img width="747" alt="1" src="https://user-images.githubusercontent.com/10217/38036280-a7358ea4-32a6-11e8-8f92-417e9e1e3e8b.png">
<img width="685" alt="2" src="https://user-images.githubusercontent.com/10217/38036289-aac87040-32a6-11e8-9f94-81745ff6c592.png">
~I'm not too proud of the QTimer::singleShot(10 bit; any suggestions on how to properly wait for the transactions table to become aware of the new transaction?~
Although I could have called focusTransaction() directly from TransactionView::bumpFee() I'm using the same signal as the send screen. This should make it easier to move fee bump / transaction replacement functionality around later.