chapter270, [SORA][SORA Network] The system part had been also become the latest core.

The system part had been also become the latest core.
In addition, the code of the old core coexists, and no problem occurs with any version of the core.

https://github.com/FromHDDtoSSD/SorachanCoin-qt/commit/fdedac56647f2dbc3198b60d9a49e090ce211589