Grouped conditions (And, At Least, At Most, Or) should have variable number of subconditions

[dehall]

Currently the "grouped" logical conditions have fixed numbers of sub-conditions: And & Or have 2, At Least & At Most have 3. These should allow an arbitrary # of sub-conditions, minimum 2.
Note that it does show all sub-conditions correctly if they are defined in the JSON. See the current "Sore Throat" module for an instance of "at least" with 6 sub-conditions.