[UX improvement] pending HTLCs details

[Darth-Coin]

Is your feature request related to a problem? Please describe. Is not a real problem. Just an UX improvement. We have on the main dashboard the pending HTLCs report but is not giving too much info what is going on.

Describe the solution you'd like In the graph presented on the dashboard, not sure if is possible to show more info when mouse over the bars. Right now is displaying only a number, but is not relevant at all. Or at least under the graph, to display a simple table with the pending HTLCs, from where to where, amount in transit, time waiting.