added link 'demo_mongodb_source_demo' to navbar
added link 'demo_mongodb_source_demo' to navbar

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