Add support for configuring the PROXY_BASE_URL independently of the DEPLOYMENT_TYPE for each deployment environment.

Add support for configuring the PROXY_URL_PREFIX independently of the DEPLOYMENT_TYPE for each deployment environment.

- Update documentation.
- Prompt for white-list
- Update deployment edivorce-django deployment parameters
- Prompt for the network address of the upstream proxy.
- Add a route for SiteMinder
- Refactor/update the Jenkins pipeline scripts.
- Add HorizontalPodAutoscalers to proxy and application configurations.
- Remove monolithic build and deployment templates.
- Refactor and clean up weasyprint configurations.
- Refactor and clean up postgresql configurations.
- Refactor and clean up edivorce-django configurations.
- Refactor and clean up nginx-proxy configurations.
- Refactor Jenkins pipeline configuration.
  - The Jenkins deployment template is not required, as a Jenkins instance is automatically provisioned when the first Jenkins pipeline configuration is deployed into OpenShift.