Part of #9744 Removes all redundant `# -*- coding: utf-8 -*-` lines from files, as python 3 automatically reads source code as utf-8 now. `Signed-off-by: Jonathan de Jong <jonathan@automatia.nl>`
* Fix parsing of Content-Disposition headers TIL: filenames in content-dispostion headers can contain semicolons, and aren't %-encoded. * fix python2 incompatibility * Fix docstrings
