Wrong mapping and descriptions for location, host, page

ga_push currently uses the following mappings in ga_push_analyticsjs_measurement_protocol_map():

    'location'        => 'dh',
    'page'            => 'dp',

The Measurement Protocol docs state:

• dl: Document location URL (example: "http://foo.com/home?a=b")
• dh: Document Host Name (example: "foo.com")
• dp: Document Path (example: "/foo")

The Rules action ga_push_action_push_pageview() in turn uses:

    'location'        => $location,
    'page'            => $page,

The descriptions on mentioned rule edit form list:

• Location: URL of the page being tracked. By default, analytics.js sets this to the full document URL, excluding the fragment identifier.
• Page: A string that is uniquely paired with each category, and commonly used to define the type of user interaction for the web object.

There seem to be quite a lot of mixups here, so quite possibly this issue needs to get split up further. I think the most pressing issue for now is the mapping of location to host. Not sure if a "straight" fix is possible without breaking existing sites that might have worked around this problem.