message: ELECTRON-978: upgrade electron version to fix issues
  Upgrading Electron to 4.0.2 resolves the following 2 issues:
  1. Pop-outs crashing
  2. File dialog going to background. We use sheets in place of modals now
diff: "browserify": "16.2.3",
  "chromedriver": "2.45.0",
  "cross-env": "5.2.0",
  - "electron": "4.0.1",
  + "electron": "4.0.2",
  "electron-builder": "20.38.4",
  "electron-builder-squirrel-windows": "20.38.3",
  "electron-chromedriver": "4.0.0-beta.1",
  