test: attempt to make Win CI green

feat: force application signing

Babel config moved to .babelrc because:

 * jest invalidate cache on config file modification
 * json5 can be used instead of ugly raw json

config option added as preparation to additional config file in yaml.

Closes electron-userland#975

chore: publish from node 6

feat: First start after update will start with a flag (electron-userl…

…and#979)

Close electron-userland#970

feat: custom NSIS installer icon (electron-userland#969)

Close electron-userland#964

fix: use productName for FileDescription on Windows (electron-userlan…

…d#965)

Closes electron-userland#783

fix: write remaining files to unpack (electron-userland#961)

fix(mac): build.fileAssociations icon links to original file in output

Closes electron-userland#954

feat: win code sign timestamp server option

Closes electron-userland#951

feat: ability to disable hard links on a CI server