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

services/youtube/YoutubeSuggestionExtractor.java

@@ -2,9 +2,9 @@ package org.schabi.newpipe.extractor.services.youtube;
 
 import org.schabi.newpipe.extractor.Downloader;
 import org.schabi.newpipe.extractor.NewPipe;
+import org.schabi.newpipe.extractor.SuggestionExtractor;
 import org.schabi.newpipe.extractor.exceptions.ExtractionException;
 import org.schabi.newpipe.extractor.exceptions.ParsingException;
-import org.schabi.newpipe.extractor.SuggestionExtractor;
 import org.w3c.dom.Node;
 import org.w3c.dom.NodeList;
 import org.xml.sax.InputSource;
@@ -20,7 +20,7 @@ import javax.xml.parsers.DocumentBuilder;
 import javax.xml.parsers.DocumentBuilderFactory;
 import javax.xml.parsers.ParserConfigurationException;
 
-/**
+/*
  * Created by Christian Schabesberger on 28.09.16.
  *
  * Copyright (C) Christian Schabesberger 2015 <chris.schabesberger@mailbox.org>
@@ -92,7 +92,7 @@ public class YoutubeSuggestionExtractor extends SuggestionExtractor {
                 }
             }
             return suggestions;
-        } catch(Exception e) {
+        } catch (Exception e) {
             throw new ParsingException("Could not get suggestions form document.", e);
         }
     }