$resource does not obey port numbers in URLs

[jsyrjala]

Following code fails because browser ends up making query to URL http://198.61.201.6:8000/api/v1-dev/trackers using standard http port 80 and ignores port I specified in URL.

Tested on versions 1.0.2, 1.0.3, 1.1.0 and 1.1.0.

    var Tracker = $resource('http://198.61.201.6:8000/api/v1-dev/trackers');

    $scope.fetchTrackers = function() {
        this.trackers = Tracker.get();
    };

[jsyrjala]

duplicate with #1664.