Add support for trigger.io

[sloops77]

This adds support for recognising trigger.io apps as WebView not a browser. To make this work at the moment the user needs to add this in a angular.run block:

window.addEventListener("load", function() {
  if (!!window.forge) {
    ionic.trigger('deviceready', {
      target: document
    });
  }
});

[adamdbradley]

Why did you remove the blurAll calls?

[adamdbradley]

I think we can add in the trigger.io support, but need to test removing blurAll() (there's other issues with blurAll(), so want to take our time removing those). @mhartington would you be able to get the trigger.io support in?

[mhartington]

Curious about the blurAll()calls as well. Care to explain @sloops77?

[sloops77]

Hi guys,
I'm sorry that removal shouldnt have been included in the PR. The reason for the removal was a separate issue that you guys have already dealt with. #2801.

[sloops77]

I'm closing this one and reopening in light of you guys already removing blurAll after beta14 was released