void FillRepos()
{
int i = repoCombo.Active;
repoStore.Clear ();
repoStore.AppendValues (Catalog.GetString ("All repositories"), AllRepoMarker);
foreach (AddinRepository rep in service.Repositories.GetRepositories ()) {
if (rep.Enabled)
repoStore.AppendValues (rep.Title, rep.Url);
}
repoStore.AppendValues ("---", "");
repoStore.AppendValues (Catalog.GetString ("Manage Repositories..."), ManageRepoMarker);
repoCombo.Active = i;
}