refs #323 - Don't add totals row if there are no entries
refs #323 - Don't add totals row if there are no entries

BocuStudio/django-timepiece,caktus/django-timepiece,dannybrowne86/django-timepiece,caktus/django-timepiece,caktus/django-timepiece,josesanch/django-timepiece,arbitrahj/django-timepiece,arbitrahj/django-timepiece,josesanch/django-timepiece,dannybrowne86/django-timepiece,BocuStudio/django-timepiece,gaga3966/django-timepiece,arbitrahj/django-timepiece,gaga3966/django-timepiece,gaga3966/django-timepiece,josesanch/django-timepiece,dannybrowne86/django-timepiece,BocuStudio/django-timepiece