Test: Electron Update 1.3.x

[bpasero]

Test for #10206:

• Windows - @mousetraps
• OS X El Capitan - @kieferrm
• OS X Sierra - @isidorn
• Linux - @mjbvz

Complexity: 4

We have updated Electron to version 1.3.x and thereby jumped 3 chrome releases and one major node.js version. This test item asks for exploratory testing focusing on native integration where possible:

• drag and drop
• menus and context menus
• window management and multiple windows
• UI regressions
• accessibility regressions

Windows: since we lost the ability to see output on the console and need to add our own helper utility to see output, please play around with code from the command line and verify you can see output for the various command line options we provide.

[chrmarti]

Known on OSX Sierra: #12473