Refactor extractor

- Refactor info classes and extractors
- Reformat and fix indentation
- Organize packages and classes
- Rename variables/methods and fix regex
- Change the capitalization
- Add methods to playlist extractor

stream/StreamInfoItem.java

@@ -0,0 +1,42 @@
+package org.schabi.newpipe.extractor.stream;
+
+/*
+ * Created by Christian Schabesberger on 26.08.15.
+ *
+ * Copyright (C) Christian Schabesberger 2016 <chris.schabesberger@mailbox.org>
+ * StreamInfoItem.java is part of NewPipe.
+ *
+ * NewPipe is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * NewPipe is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with NewPipe.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+import org.schabi.newpipe.extractor.InfoItem;
+
+/**
+ * Info object for previews of unopened videos, eg search results, related videos
+ */
+public class StreamInfoItem extends AbstractStreamInfo implements InfoItem {
+    public int duration;
+
+    public InfoType infoType() {
+        return InfoType.STREAM;
+    }
+
+    public String getTitle() {
+        return name;
+    }
+
+    public String getLink() {
+        return url;
+    }
+}