Various improvements to CSAM integration:
- Refactor mock service for readability
- add '/v1' prefix to endpoints in mock service
- Enhance details in README for better documentation
- Add view to get info on multiple systems in a loop
  to support batch update of cached information

…method

…request associated with the deleted proposal.

feat(System Component Owner Steps): Communication between a System owner and a Component Owner

…q-private into develop-aspen

…ently have one

Several mixins (TagModelMixin, ProposalModelMixin, etc) needed
to have 'blank=True) added to model definition so that the
Django admin form for models that had relationships to models
using the mixin did not require those fields to have values.

Small refactorings to CSAM integration.

Add integrations framework

Add javascript to reload component tabs on form submit; Add data validation on party creation and editing