tasks #6678: List the artifact links in the references sidebar like it's done in modal

Change-Id: I37022a473eeac0374b645d486e89023d77aa9228
Merge commit 'refs/changes/24/2324/2' of http://gerrit.tuleap.net/tuleap into HEAD

* http://gerrit.tuleap.net/tuleap:
  tasks #6678: List the artifact links in the references sidebar like it's done in modal

Change-Id: I9661aa6bc9513d7cf463fefaad0ade36817bbb77
This is Tuleap 6.12.99.69

Change-Id: I80eec682c659774b2b854d55c036becaf4d72a41