+series list puts always lists focus first

[Jelmer Vernooij]

The list of release series for a product highlights the serie that has the development focus.
However, it also lists that serie first, which can be somewhat confusing as it's not necessarily the most recent serie. For example, in my case it lists 0.4, 0.5, 0.3, 0.2 and 0.1.

I think the highlight (and text "Current development focus") in itself is sufficient and that sorting the release series by name would be clearer.