Code review comment for lp:~ilidrissi.amine/software-center/addons

Sorry for the slow reply. I had a look over the code and its pretty good. There are some small issues I would like to see fixed.
- recommended_addons and suggested_addons are almost the same, would be nice to consolidate the bits that are equal into their own function to avoid duplications
- I moved some of the lowlevel stuff into PackageAddonsManager (in lp:~mvo/software-center/addons
- I would love to avoid the extra addons_install, addons_remove to each of the action methods in aptdaemon (as install()/remove() is really a apply() now for complex changes)
- tests are missing
- there are merge conflicts with trunk/ (because of the debfiles branch merge)

There are some design issues (probably more something for mpt):
- moving the install button to the end of the page is not ideal IMO, with the gimp and the default window size its not visible without scrolling
- just showing the summary without a package name or a way to navigate to the app is not that useful for the user to understand what he gets from the addon