Exiting grc fails with
Prefs path: /grc.conf
[Errno 13] Keine Berechtigung: '/grc.conf'
So the settings like recently opened files or geometry of grc can not be saved.
Signed-off-by: Volker Schroer <3470424+dl1ksv@users.noreply.github.com>
All of the removed `from __future__ import` were needed in older
versions of Python (mostly 2.5.x and below) but later became mandatory
in most versions of Python 3 hence are not necessary anymore.
More specifically, according to __future__.py[1]:
- unicode_literals is part of Python since versions 2.6.0 and 3.0.0;
- print_function is part of Python since versions 2.6.0 and 3.0.0;
- absolute_import is part of Python since versions 2.5.0 and 3.0.0;
- division is part of Python since versions 2.2.0 and 3.0.0;
Get rid of those unnecessary imports to slightly clean up the codebase.
[1] https://github.com/python/cpython/blob/master/Lib/__future__.py
When looking for the config file, allow the env variable
GR_PREFS_PATH to be searched so that multiple installations
of GR each with its own prefs can be used, similar to what
is currently done in GRC
