Implemented HBC parser to read all useful info about titles

Titles, chapters, audio and subtitle streams and metadata are now parsed from the handbrakecli output into title objects.
Source-details page now renders this info

pages/browse/source-details.php

@@ -23,5 +23,6 @@ $source = new HandBrakeCluster_Rips_Source($source_path);
 $this->smarty->assign('source_path', $source_path);
 $this->smarty->assign('source', $source);
 $this->smarty->assign('output', $source->output());
+$this->smarty->assign('titles', $source->titles());
 
 ?>