Merge branch 'ethersphere-feature/keys' into develop

.gitignore

.travis.yml

ethereal/Makefile

ethereal/assets/debugger/debugger.qml

ethereal/assets/ext/big.js

ethereal/assets/ext/ethereum.js

ethereal/assets/ext/pre.js

ethereal/assets/ext/string.js

ethereal/assets/facet.png

ethereal/assets/heart.png

ethereal/assets/muted/codemirror.css

ethereal/assets/muted/debugger.html

ethereal/assets/muted/eclipse.css

ethereal/assets/muted/index.html

ethereal/assets/muted/lib/codemirror.js

ethereal/assets/muted/lib/go.js

ethereal/assets/muted/lib/matchbrackets.js

ethereal/assets/muted/muted.js

ethereal/assets/net.png

ethereal/assets/network.png