Device:
- fixed problem with subscription handling

- Activated "Grafana" link in top menu
- Implemented onboarding of devices + configuration from JSON descriptor files
- added device status in device details page
- created new grafana dashboard for new PostgreSQL-based monitoring database
- updated deploy.sh script with correct configuration of Grafana monitoring datasource and new dashboard

- corrected deployment name in manifest file
- added resource requests and limits for monitoring server container

- corrected components imported by the tests and default my_deploy.sh

- Added script to generate topologies and services using DC_CSGW_OLS
- Corrected script to generate topologies and services using DC_CSGW_TN_OLS
- Corrected resources imported by functional tests

- Implemented generic MutexQueues class
- Implemented sequentialization of operations in Device component to prevent data corruption and race conditions