[videoob] set non verbose mode for wget  when downloading m3u8 (fix #1643)
Import exceptions from weboob.exceptions
handle investment pages even if they aren't implemented yet
fix certificate check on servers which don't allow SSLv3
Add weboob.tools.misc to tests
filters: Add Unicode normalization to CleanText

With a default to 'NFC'.
This is inspired by python-ftfy, which has a nice explanation of the modes:
https://github.com/LuminosoInsight/python-ftfy

I think K is too strong to be a default, however C has zero visual differences
and should be the most common way to represent Unicode characters.
form: Add comments
Test méthode match

Signed-off-by: juliaL03 <julia.leven@etudiant.univ-lille1.fr>
browser tests: pep8 fixes
browser tests: Add to setup.cfg