Angular's $location object is sent to analytics for every page track

[henrahmagix]

The second argument to the pageTrack method of Angulartics is the $location object seen here:
https://github.com/angulartics/angulartics/blob/80325aa938dfbbe95b2e1287767d6e47294935bf/src/angulartics.js#L306

which results in multiple extra fields being sent to ga() due to extending the object here:

angulartics-google-analytics/lib/angulartics-ga.js

Lines 62 to 65 in 8593282

	dispatchToGa('pageview', 'send', angular.extend(angular.copy(properties), {
	hitType: 'pageview',
	page: path
	}));

The following is logged to the console when using the Google Analytics Debugger extension for Chrome:

Executing Google Analytics commands.
analytics_debug.js:17 Running command: ga("send", {$$protocol: "http", $$host: "localhost", $$port: 80, $$parse: [function], $$compose: [function], $$parseLinkUrl: [function], $$path: "", $$search: {}, $$hash: "", $$url: "", $$absUrl: "http://localhost/foo", $$state: null, $$replace: true, hitType: "pageview", page: ""})
analytics_debug.js:17 Set called on unknown field: "$$protocol".
analytics_debug.js:17 Set called on unknown field: "$$host".
analytics_debug.js:17 Set called on unknown field: "$$port".
analytics_debug.js:17 Set called on unknown field: "$$parse".
analytics_debug.js:17 Set called on unknown field: "$$compose".
analytics_debug.js:17 Set called on unknown field: "$$parseLinkUrl".
analytics_debug.js:17 Set called on unknown field: "$$path".
analytics_debug.js:17 Set called on unknown field: "$$search".
analytics_debug.js:17 Set called on unknown field: "$$hash".
analytics_debug.js:17 Set called on unknown field: "$$url".
analytics_debug.js:17 Set called on unknown field: "$$absUrl".
analytics_debug.js:17 Set called on unknown field: "$$state".
analytics_debug.js:17 Set called on unknown field: "$$replace".
analytics_debug.js:17 Setting throttling cookie: "_gat"
analytics_debug.js:17 
Sent beacon:
<output specific to my project>

[henrahmagix]

I'm not sure if this means those extra fields are being sent to Google or not, and whether that's ok or not, but I feel like it's a bug.

I'm also not sure of the intent of Angulartics pageTrack specific method, so I can't be sure that this library shouldn't be extending properties. I would submit a pull-request but I don't feel familiar enough with this project, sorry =)