lots of dashboard improvements

configs/db_new.yaml

src/app.py

src/dashboard/constants.py

src/dashboard/layout_helper.py

src/dashboard/styles.py

src/dashboard/tables_and_plots.py

src/import_model.py

src/predict_database.py

src/utils/db_tools/db_tools.py

src/utils/db_tools/orm_classes.py

src/utils/helpers.py