only show "(unkown)" in overview when hosts has this record, add some trans tags
add python_2_unicode_compatible in models.py #189
remove all __unicode__() for python3 compatibility
python3 compatibility for account models
replace PermissionDenied with Http404
dont use unicode_literals
remove unicode_literals from account models
replace __unicode__() with text_type for python3
Merge pull request #191 from elnappo/master

add python 3 compatibility and some minor stuff