Improve transaction lists

[im-adithya]

Follow-up to #465

• ~Add pagination to transactions (remove hack to get all transactions in one go)~ It's complicated as LND has separate methods to fetch incoming and outgoing
• Add modal to show transaction details on click

[rolznz]

@im-adithya other things:

• Add podcasting info on transactions that have it
• Add the current app that sent/received the payment