Feature Request: Improve usefulness of the ops over last 100 ledgers graph

[tomquisel]

What problem does your feature solve?

There's currently no way to see if recent ledgers have been full (and therefore subject to surge pricing) or not.

What would you like to see?

Change the "Successful tx & ops over the last 100 ledgers" graph to be "Successful & failed ops over the last 100 ledgers":

The current graph is somewhat nonsensical anyway, it's meaningless to have a bar graph that stacks ops on top of txns. The total height of the bar—ops count + txn count—is a useless value. There's already another graph showing the number of successful txns. Change this graph to show the total number of operations, with each bar split into successful & failed operations. This mirrors the other txn graph.

[tomerweller]

Horizon doesn't keep track of failed operations right now. A simple implementation would depend on this: stellar/go#1385

[abuiles]

stellar/go#1385 has been fixed.

You can now get tx_set_operation_count from the ledgers resource https://horizon.stellar.org/ledgers/30403828

It should unblock this issue.