crosslink - links from system and activation key subscriptions

[thomasmckay]

Depending on whether the subscription is from Red Hat provider or a custom one, links are now shown on Activation Keys and Systems for the displayed subscriptions.

[iNecas]

I was not able to subscribe a system with activation key asssigned to a subscription: getting

Pool ff80808138dc0e040138dc19d3f30032 has no product associated

This is not probably caused byt this pull request, but rather with this one c80fac9 and the following code

katello/src/app/models/lazy_accessor.rb

Line 144 in 5adaff1

remote_values.each_pair {|k,v| instance_variable_set("@#{k.to_s}", v) if (attrs and attrs.include?(k.to_sym) and respond_to?("#{k.to_s}="))}

, expecting the variables and reponse keys to have the same name.

[iNecas]

My previous comment doesn't relate directly to this pool request. The code changes here are ok, I will send fiexes for the found issues in different pullrequest. Merging now.