[sources] Skip problematic sources when starting shell instead of crashing. Closes #3670208
At least this gives an opportunity to fix the problem in using c-c shell, which
is currently not possible because it crashes during initialization.
Notice that since sources are copy based, it should not be a problem at all to
have some disabled, beside for services such as authentication sources as
ldapfeed.
# -*- coding: utf-8 -*-
# copyright %(year)s %(author)s, all rights reserved.
# contact %(author-web-site)s -- mailto:%(author-email)s
#
%(long-license)s
"""%(distname)s repository side views, usually for notification"""