Backporting to beta (#5791)

* v1.6.8

* Update expanse json with fork at block 600000 (#5351)

* Update expanse json with fork at block 600000

* update exp chainID to 2

* Bumped mio

* Fixed default UI port for mac installer (#5782)

* Blacklist empty phrase account.

* Update Cid/multihash/ring/tinykeccak (#5785)

* Updating ring,multihash,tiny-keccak

* Updating CID in ipfs.

* Disable compression for RLP strings