Display just the table (no search box, no summary) when the table only has a few rows

[mwouts]

If the table fits in one page (e.g. not more than 10 rows), the search box and summary take room in the output cell but are not really useful.

After this PR, only the table will be displayed when all the conditions below are satisfied:

• the table has not more than 10 rows
• the user has not set a dom option
• they have not set a lengthMenu option, or the table rows fit in the minimum length of the menu