[#7836] ticket:739 Use c.app in the merge_request_commits for git
[#7836] ticket:739 Use c.app in the merge_request_commits for git

It executes in the downstream context, so we need to use downstream app to
generate a list of commits. If we don't do that, we will see empty list on the
first request to the page (right after user creates merge request).

heiths/allura,apache/allura,lym/allura-git,heiths/allura,lym/allura-git,heiths/allura,lym/allura-git,lym/allura-git,apache/allura,apache/allura,apache/allura,apache/allura,heiths/allura,lym/allura-git,heiths/allura