Comment 5 for bug 1450459

I've committed the changes necessary to move to standard Debian packaging and it will be in effect on next release.
The new rules file is much simpler now and shouldn't cause such problems:

#!/usr/bin/make -f
%:
ifneq ($(shell dh -l | grep -xF translations),)
 dh $@ --with python2,translations
else
 dh $@ --with python2
endif