Performance tuning focused release.

• Querying claimable balances has been optimized (4385).
• Querying trade aggregations has been optimized (4389).
• Postgres connections for non ingesting Horizon instances are now configured to timeout on long running queries / transactions (4390).
• Added disable-path-finding Horizon flag to disable the path finding endpoints. This flag should be enabled on ingesting Horizon instances which do not serve HTTP traffic (4399).