Squashed commits:
[af77987] refactor(xod-client, xod-client-browser, xod-client-electron): move common webpack config into xod-client, and extend it with specific options in other endpoint clients (browser/electron)
[ddae62d] chore(xod): update `hm-def` to latest `0.2.1` version (that uses the same Ramda version)
[5d80680] chore(xod): prepare all Ramda imports and some functions to migrate to 0.25.1 to be optimized better by tree-shaker (0.25.0 already has a features for better tree shaking, but it has a lot of bugs and perfomance regressions, so we’ll stay at 0.24.1 for a while)
[9c05d6c] chore(xod-client-browser, xod-client-electron): enable UglifyJS webpack plugin to eliminate dead code and minify bundle (7.8MB -> 3.8MB)
[cafbfcf] chore(xod, xod-client-browser, xod-client-electron): update webpack to version 3, update loaders,
Benefits of a fresher version of React don't need an explanation :)
And `react-hot-loader` was not doing anything for us — page was fully reloaded on every change anyway.
