Fix a bug where matching query parameters will fail for a query string that has URL encoded values.
This does not happen with the iOS version of the namesake library.

Repro: mdldemo://handler/3?referrer=utm_campaign%3Dsomecampaign

MobileDeepLinkingConfig.json (added "referrer" as a routeParameter and display the value through the testHandler):

        "handler/:handlerId": {
            "handlers": ["testHandler"],
            "class": "com.mobiledeeplinking.android.demo.SecondActivity",
            "routeParameters" : {
                "handlerId" : {
                    "regex": "[0-9]"
                },
                "referrer" : {}
            }
        }