Plugin Compatibility Fixes for Nodeos 1.8.x

[trakout]

Fixed:

• (Related Issue)
• After much trial & error, this fixes compilation issues when building this plugin with the latest stable release of Nodeos.
  • receiver is now located directly inside action (action.receipt.receiver -> action.receiver)
  • commented out the iteration on inline traces, these should all be flat transaction traces now
  • renamed accepted_block_conn to accepted_block_connection, and applied_tx_conn to applied_transaction_connection
  • Updated function signature for the lambda in chain.applied_transaction.connect

Tested on:

• Ubuntu 18.04 (fresh install)
• Nodeos 1.8.5