request #6441: Enhance agiledashbord homepage behaviour

 * agile dashboard homepage will use status for milestones unless the corresponding tracker uses the date fields (start_date & duration)
 * Add feedback to end users regarding the last level mistones search process (search by time or by status)

Change-Id: I5513f1b73751e06323c196d38e8509f6cb3fc639
tasks #7106: results with html entities should be displayed correctly

Change-Id: I7d212ca671df51eae58fabff4cb06a5922309445
Merge commit 'refs/changes/47/2547/10' of ssh://gerrit.tuleap.net:29418/tuleap into HEAD

* ssh://gerrit.tuleap.net:29418/tuleap:
  request #6441: Enhance agiledashbord homepage behaviour

Change-Id: I33530ba8dbdb2af05ad79ec8742fff743ba3f252
This is Tuleap 7.1.99.59

Change-Id: I860bbf114400fa110c8502bdf0bd15310d403999