Moving fetching of hash-addressed dapps/content to separate crate.

* Ropsten network

* Sorted premine

* Comas

* Removed trailing coma

Add simple one-line installer to README.md

Propagations & local transactions tracking

Add simple one-line installer for Mac and Ubuntu to README.md

Correct format of eth_signTransaction

ABI can be empty and auto-fill contract name

Fix versions for NPM

Better GHH event display & tracking

Dapp section & visibility changes

* Limit sync reorg

* Fixed tests