Merge pull request #740 from AlexSat/AlexSat-739

#739 Fix content type for mobi/prc book formats

Author: crocodilestick

cps/__init__.py

@@ -43,8 +43,8 @@
 mimetypes.add_type('application/epub+zip', '.epub')
 mimetypes.add_type('application/epub+zip', '.kepub')
 mimetypes.add_type('text/xml', '.fb2')
-mimetypes.add_type('application/octet-stream', '.mobi')
-mimetypes.add_type('application/octet-stream', '.prc')
+mimetypes.add_type('application/x-mobipocket-ebook', '.mobi')
+mimetypes.add_type('application/x-mobipocket-ebook', '.prc')
 mimetypes.add_type('application/vnd.amazon.ebook', '.azw')
 mimetypes.add_type('application/x-mobi8-ebook', '.azw3')
 mimetypes.add_type('application/x-cbr', '.cbr')