Remote storages and Ethereum nodes.

Changes

Major

• remote mongoDB/elasticsearch configurations host/port
• support Geth JSON/HTTP and INFURA nodes.
• Upgrade to web3j 3.4.0.

Minor

• Minor adjustments to the graphical user interface
• Use yaml for application configuration instead of json.
• Upgrade to newer chili-core version.
• Index all fields of transactions.

Bug fixes

• Import does not always stop when complete.
• Blocks are not imported if transactions are not checked.
• Application does not terminate when commands complete.

Updated README.md.