OSB-45: general refactoring and speeding up queries

.gitattributes

LCU/Maintenance/DBInterface/CMakeLists.txt

LCU/Maintenance/DBInterface/django_postgresql/settings.py

LCU/Maintenance/DBInterface/monitoringdb/models/component.py

LCU/Maintenance/DBInterface/monitoringdb/models/rtsm.py

...erface/monitoringdb/models/signals/generic_test_insert.py

LCU/Maintenance/DBInterface/monitoringdb/models/test.py

LCU/Maintenance/DBInterface/monitoringdb/models/wincc.py

...ntenance/DBInterface/monitoringdb/rtsm_test_raw_parser.py

...Maintenance/DBInterface/monitoringdb/serializers/wincc.py

...nance/DBInterface/monitoringdb/station_test_raw_parser.py

...ntenance/DBInterface/monitoringdb/tasks/generate_plots.py

...enance/DBInterface/monitoringdb/tasks/insert_raw_tests.py

LCU/Maintenance/DBInterface/monitoringdb/views/common.py

...Maintenance/DBInterface/monitoringdb/views/controllers.py

LCU/Maintenance/DBInterface/monitoringdb/views/logs_view.py

LCU/Maintenance/DBInterface/monitoringdb/views/rtsm_views.py

...ance/DBInterface/monitoringdb/views/station_test_views.py

LCU/Maintenance/Docker/BaseMaintenance/Dockerfile

LCU/Maintenance/Docker/DBInterface/Dockerfile