Sensitive Fields 2.0 (preprocessing implementation)

...ntend_client/app/admin/databases/databases.controllers.js

resources/frontend_client/app/services.js

src/metabase/api/common.clj

src/metabase/api/meta/table.clj

src/metabase/models/field.clj

src/metabase/models/field_values.clj

src/metabase/models/table.clj

test/metabase/api/meta/table_test.clj

test/metabase/driver/mongo/test_data.clj

test/metabase/driver/mongo_test.clj

test/metabase/driver/query_processor_test.clj

test/metabase/models/field_values_test.clj

test/metabase/test_data.clj

test/metabase/test_data/data.clj

test/metabase/test_data/load.clj