[frontend] Fix breadcrumbs to not include Home as a separate page
[frontend,core] Rename Rows with -1 row count to unknown. This is because of postgres does not update the pg_class (for smaller size tables). We cannot perform a count on the table as that is a slow query.
[frontend] Make dropdown have a caret to differentiate it from input
[core]: Remove schema from storage unit as that is not required (schema is already selected)