When an icon file name matches a GNOME theme icon;
Traceback (most recent call last):
File "/usr/lib/python2.7/dist-packages/sugar3/graphics/icon.py", line 214, in _get_attach_points
cp.readfp(config_file)
File "/usr/lib/python2.7/ConfigParser.py", line 324, in readfp
self._read(fp, filename)
File "/usr/lib/python2.7/ConfigParser.py", line 512, in _read
raise MissingSectionHeaderError(fpname, lineno, line)
MissingSectionHeaderError: File contains no section headers.
Caused by reading a .png file as if it were config file, in turn
because the icon was expected by the toolkit to be .svg file type.
Regression introduced by f796638.
Fixes https://github.com/sugarlabs/activity-abacus/issues/16
James Cameron
58224cb15d