Github PRs: Collapse/expand file

	// Add a button to Collapse or Expand files in a Github PR
	//
	// See it in action: http://cl.ly/image/1r3q3d0d3b0p
	//
	// Install Tampermonkey and add this as a script
	// ==UserScript==
	// @name Github PRs: Collapse/expand file
	// @namespace https://gist.github.com/micho/855b272d2f408f04729e
	// @version 0.1
	// @description Add a button to expand or collapse files in PRs
	// @author You
	// @match https://github.com/*/pull/*/files
	// @grant none
	// ==/UserScript==
	$(function () {
	$(".js-conduit-openfile-check").remove();
	$(".file .actions").prepend(function () {
	$button = $('<a href="#" class="minibutton">Collapse</a>')
	$button.click(function (e) {
	e.preventDefault();
	$(this).parents(".file").find(".data").toggle()
	$(this).text($(this).text() == "Collapse" ? "Expand" : "Collapse");
	});
	$(this).find(".minibutton").after($button).after(" ");
	})
	});