scifight_proj/settings.py: set STATIC_ROOT to 'static_files'
scifight_proj/settings.py: set STATIC_ROOT to 'static_files'

The 'static_files' directory name was chosen over simple 'static' in order
to differentiate it from individual application's 'static' directories;
'static_files' is the place there *all* 'static' directories are gathered
together, so we don't want to put versioned files there.

Signed-off-by: Artem Matyashov <8d377410f20d841bcaa9873ac13a2ec6f87d4cc5@gmail.com>
Signed-off-by: Pavel Kretov <7cae407f1f3b56350827d1394be40a3e8f9cb303@gmail.com>

scifight/scifight,turboj55/scifight,scifight/scifight,turboj55/scifight,turboj55/scifight,scifight/scifight