Natural sorting for constructs (and other elements?)

[loucasal]

When constructs are sorted by construct name, the QDDT uses alphabetical sorting rather than natural sorting.

Example:
R10O_D1
R10O_D11
R10O_D12
R10O_D2

Rather then:
R10O_D1
R10O_D2
R10O_D11
R10O_D12

This may apply to other elements within the tool as well.