image upload for main site

src/document/models.py

src/document/views.py

src/images/__init__.py

src/images/admin.py

src/images/apps.py

src/images/migrations/0001_initial.py

src/images/migrations/0002_auto_20200208_0254.py

src/images/migrations/__init__.py

src/images/models.py

src/images/serializers.py

src/images/tests.py

src/images/urls.py

src/images/views.py

src/kszkepzes/settings/base.py

src/kszkepzes/urls.py

src/mentors/views.py