Stop adding unnecessary new lines into base64 response string

base64.fromArrayBuffer is perfectly capable of decoding one long line of base64 string, see https://github.com/apache/cordova-js/blob/master/src/common/base64.js#L24

Author: chuchuva

src/android/com/silkimen/cordovahttp/CordovaHttpResponse.java

@@ -75,7 +75,7 @@ public JSONObject toJSON() throws JSONException {
     } else if (this.isFileOperation) {
       json.put("file", this.fileEntry);
     } else if (this.isRawResponse) {
-      json.put("data", Base64.encodeToString(this.rawData, Base64.DEFAULT));
+      json.put("data", Base64.encodeToString(this.rawData, Base64.NO_WRAP));
     } else {
       json.put("data", this.body);
     }