Show build products on aggregates with channels.

This is to get a bit more consistency among channel builds but doesn't do a radical change on the display. Ideally we may want to have a channel overview with all the constituents and a small help showing how the user can add the channel.

Unfortunately, this also introduces an inconsistency: We previously used the subtype "channel", but now we're expecting "channel" as the type of the product, so we need to change this for the channels overview as well.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>

Created by  aszlig  on April 20, 2015
3EJABTVV4M2U77HKHPKMFTR6KAKOXKLUB2PKGE2RRPWCAX2BC56QC
Change contents