polyfill es2015 in older browsers and for phantomjs

[ascott]

only need to include babel-polyfill once per js entry file. since css-theme and common.js are both used with the dashboard, sqllab, etc, they don't need the polyfill since it's already been included in the single page app entry file.

IE11 before:

IE 11 after:

@williaster @mistercrunch @bkyryliuk

[williaster]

nice! also the browserstack.com tool you're using looks useful!

[gschrader]

I just tested this on IE 11 and there still seems to be a problem:

the wrong url seems to be generated to grab the json, IE url vs Chrome url . Looks like it's missing caravel/explore/table/3 as a prefix.

This is maybe what was being reported in #1201 and I'm not sure why works fine in browserstack.com.

Regardless this change works for my other browser and can still hopefully be merged. Thanks!

[ascott]

@gschrader that is a different bug/issue with IE not forming the correct URL for the slice, and not related to this polyfill change. would be great if you could create a new issue documenting this bug. thanks!

[gschrader]

@ascott agreed it's a different issue, I will raise a new issue (probably won't get a chance until tomorrow).

[panutat]

Did you have to do anything special to get PhantomJS to wait and detect elements rendered in slice_container? For some reason I can't select any SVG elements no matter how long I wait after page load.