Add a special search term which fetches and displays totals

[gregdan3]

• Should work with attributes, selecting the totals corresponding to that attribute
• The term should ideally not otherwise be valid to search for; it needs to be a symbol rather than a writing character, or maybe a marked word.
• Should be responsive to the selected unit time (this data is available in separate tables, same as with
• There needs to be a straightforward way to search for totals of a certain length, rather than making the user enter the search term N times. (Whatever it is could be re-used for wildcards, potentially?)