Small fixes across the admin assistant and admin tables.
- No more duplicate results tables: when the assistant showed a results table, a plain-text copy of the same table could still appear underneath if the assistant shortened a column heading (for example writing "ID" instead of "Customer id"). Only the proper table is shown now. Unrelated tables in the same answer are still kept.
- Feedback options now in Chinese: the options shown after giving an assistant answer a thumbs down - such as inaccurate or wrong, incomplete information, not helpful, did not follow instructions, and off-topic - now appear in Chinese instead of English.
- Cleaner table loading: while a list is still loading, the empty paging bar at the bottom is hidden and appears once the results arrive. Column headings stay visible the whole time.
