Fix Issues from Translation Update

- Add Qtlib to transifex config
- Pull latest qtlib translations
- Fix flake8 error
- Remove code for manual translation import, use transifex-client instead

hscommon/trans.py

@@ -13,7 +13,7 @@ import locale
 import logging
 import os.path as op
 
-from .plat import ISWINDOWS, ISLINUX
+from .plat import ISLINUX
 
 _trfunc = None
 _trget = None