Hotfix UI bugs

...vice/src/main/java/at/tuwien/endpoints/TableEndpoint.java

.../test/java/at/tuwien/endpoints/TableEndpointUnitTest.java

...rc/test/java/at/tuwien/mvc/PrometheusEndpointMvcTest.java

...a-service/test/src/main/java/at/tuwien/test/BaseTest.java

dbrepo-ui/components/identifier/Persist.vue

dbrepo-ui/components/subset/Builder.vue

dbrepo-ui/components/subset/Results.vue

dbrepo-ui/components/table/TableImport.vue

dbrepo-ui/components/table/TableSchema.vue

dbrepo-ui/composables/query-service.ts

dbrepo-ui/composables/table-service.ts

dbrepo-ui/composables/view-service.ts

dbrepo-ui/locales/de-AT.json

dbrepo-ui/locales/en-US.json

...ui/pages/database/[database_id]/table/[table_id]/data.vue

dbrepo-ui/pages/database/[database_id]/table/import.vue

...o-ui/pages/database/[database_id]/view/[view_id]/data.vue