Identify original funding sources for neurons

[wpb1]

Develop a forensic tool that can query neuron accounts for funding sources for that neuron. When an neuron ID is entered, display all the accounts and sum of ICP that were used to fund that neuron sorted from highest to lowest ICP amount. When a user selects an account in the list, expand to show all transactions that funded the neuron from that account sorted from highest to lowest ICP amount. When a user selects a specific transaction, show all accounts and total ICP that made deposits to that account prior to the transaction sorted from highest to lowest ICP amount. When a user selects an account in the list, expand to show all transactions that funded the account sorted from highest to lowest. Continue this pattern as many times as needed by the user. Allow the user to tag each account they consider to be the funding sources for the neuron. Enable quick return to the original neuron level and indicate what forensic path has already been followed in that session.

Note: It may be best to enable this functionality to users who are logged in to ic rocks. Different people will reach different conclusions as to what accounts originally funded the neuron, so it might make more sense for this to be a custom query with user specific results.