Fix imports and general cleanup

· Import from compat what comes from compat. Yes, some names are available in utils too, but that's an implementation detail.
· Use _match_id consistently whenever possible
· Fix some outdated tests
· Use consistent valid URL (always match the whole protocol, no ^ at start required)
· Use modern test definitions

youtube_dl/extractor/played.py

@@ -5,11 +5,13 @@ import re
 import os.path
 
 from .common import InfoExtractor
-from ..utils import (
-    ExtractorError,
+from ..compat import (
     compat_urllib_parse,
     compat_urllib_request,
 )
+from ..utils import (
+    ExtractorError,
+)
 
 
 class PlayedIE(InfoExtractor):
@@ -28,7 +30,6 @@ class PlayedIE(InfoExtractor):
 
     def _real_extract(self, url):
         video_id = self._match_id(url)
-
         orig_webpage = self._download_webpage(url, video_id)
 
         m_error = re.search(