Merge branch 'develop' into qt5.4

cmd/mist/assets/ext/.bowerrc

cmd/mist/assets/ext/.editorconfig

cmd/mist/assets/ext/.gitignore

cmd/mist/assets/ext/.jshintrc

cmd/mist/assets/ext/.npmignore

cmd/mist/assets/ext/.travis.yml

cmd/mist/assets/ext/LICENSE

cmd/mist/assets/ext/README.md

cmd/mist/assets/ext/bower.json

cmd/mist/assets/ext/dist/ethereum.js

cmd/mist/assets/ext/dist/ethereum.js.map

cmd/mist/assets/ext/dist/ethereum.min.js

cmd/mist/assets/ext/example/balance.html

cmd/mist/assets/ext/example/contract.html

cmd/mist/assets/ext/example/natspec_contract.html

cmd/mist/assets/ext/example/node-app.js

cmd/mist/assets/ext/gulpfile.js

cmd/mist/assets/ext/index.js

cmd/mist/assets/ext/lib/abi.js

cmd/mist/assets/ext/lib/contract.js