Fix regression introduced in git 2.7.24

+ No longer need to pass a view to the tree strategy
+ Fix styling issue for various screen sizes
Merge commit 'refs/changes/60/260/1' of http://gerrit.tuleap.net/tuleap into stable

* http://gerrit.tuleap.net/tuleap:
  Fix regression introduced in git 2.7.24
This is tuleap 5.10.99.11