GetGroups does not return the id = icon name for categories

[kkofler]

For categories, the GetGroups D-Bus API (implemented in DnfDaemonBase.get_groups in python/dnfdaemon/server/__init__.py) returns the name instead of the id, the id is lost. This is a problem because the id is needed to look up the correct icon in GUIs, both for the category itself, and for groups within the category that do not have their own icons (where, according to https://fedorahosted.org/comps/ , we are supposed to fall back to the category's icon).

[kkofler]

If Yumex-DNF really needs the current behavior of the [0] entry, we need another array entry that reliably contains the ID.

[kkofler]

Any update on this issue? I would really like to get rid of this hardcoded map:
https://github.com/anaselli/dnfdragora/blob/master/dnfdragora/compsicons.py#L17
that maps the category names back to the IDs.