Batch Convert / A few preset time formatter combinations

[meteorquake]

In Batch Convert, the naming template offers, under the right triangle, some individual symbols for formatting dates.

* Can I suggest a few popular combinations are provided as well as the individual letters, I'm thinking particularly of Y-m-d-H-M-S and Y_m_d_H_M_S as that would save on manual entry and encourage unambiguous dating; and/or they could be prefilled in the template droplist examples; the use of m_d_Y and d_m_Y is inherently ambiguous and sort less well in sorting scenarios.

David