* Add http enable flag for Node
* Fix errors with json test data
* Refactor changes with regards to review comments
* Return appropriate errors for novalue set
* Update changes with regard to config
* Update tests timeout value for makefile ci
* Add RPCEnabled for json config in api test
* Resolve test with RPCEnabled changes
* Remove RPCEnabled flag from unconcerned tests
- node: signals and node reset, fixes#152
- tests update (testify is used)
- node manager refactored, race conditions fixed
- node wrapper has been removed, we rely on go-ethereum node now
- tx queue refactored
- jail refactored
- backend and API introduced