Merge pull request #435 from OpenTechFund/feature/247-add-duration-fields

opentech/apply/funds/blocks.py

...ons/0040_add_duration_stream_to_streamfield_definition.py

opentech/apply/funds/models/submissions.py

...pply/funds/templates/funds/includes/rendered_answers.html

opentech/apply/funds/tests/factories/blocks.py

opentech/apply/funds/tests/factories/models.py

opentech/apply/funds/tests/test_models.py

opentech/apply/review/tests/factories/models.py

opentech/apply/stream_forms/blocks.py

...ply/stream_forms/templates/stream_forms/render_field.html

opentech/apply/stream_forms/testing/factories.py

opentech/apply/utils/blocks.py

opentech/static_src/src/sass/apply/components/_grid.scss