Story OSB-11: adding filter capabilities and cleaning up the code.

.gitattributes

LCU/Maintenance/DBInterface/CMakeLists.txt

LCU/Maintenance/DBInterface/django_postgresql/settings.py

...ntenance/DBInterface/monitoringdb/models/error_details.py

...tenance/DBInterface/monitoringdb/serializers/component.py

...e/DBInterface/monitoringdb/serializers/component_error.py

...intenance/DBInterface/monitoringdb/serializers/element.py

...nce/DBInterface/monitoringdb/serializers/element_error.py

...nce/DBInterface/monitoringdb/serializers/error_details.py

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

...intenance/DBInterface/monitoringdb/serializers/station.py

...nce/DBInterface/monitoringdb/serializers/station_tests.py

...Maintenance/DBInterface/monitoringdb/serializers/utils.py

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

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