Tuleap tour foundations

TODO:
* replace window.localStorage ?

Change-Id: I1ec0134d724439f5f2b58f43683e490c418ec951
Merge commit 'refs/changes/28/2228/6' of ssh://gerrit.tuleap.net:29418/tuleap into stable

* ssh://gerrit.tuleap.net:29418/tuleap:
  Tuleap tour foundations
This is Tuleap 6.12.99.1

Change-Id: Icdb09aefcc54cc35932f2ca78cc97152f57c969b