removed usage of 'plot' template tag and used chart.as_html
removed usage of 'plot' template tag and used chart.as_html

vivek8943/django-graphos,aorzh/django-graphos,vivek8943/django-graphos,vivek8943/django-graphos,vpistis/django-graphos,aorzh/django-graphos,vpistis/django-graphos,agiliq/django-graphos,vpistis/django-graphos,agiliq/django-graphos,agiliq/django-graphos,aorzh/django-graphos,sheepeatingtaz/django-graphos,sheepeatingtaz/django-graphos,sheepeatingtaz/django-graphos