adds StripQueryString()

A way to remove query parameters from a given URL

StripQueryString("http://foo.com/bar.png?a=1&b=2") will result in http://foo.com/bar.png

string_utils/string_utils.go

@@ -299,7 +299,7 @@ func LimitStringToMaxLength(str string, maxLen int) string {
 func StripQueryString(inputUrl string) (string, error) {
 	u, err := url.Parse(inputUrl)
 	if err != nil {
-		return "", err
+		return inputUrl, err
 	}
 	u.RawQuery = ""
 	return u.String(), nil