Now we can filter on information in the backlog

Change-Id: I3d641bc8b77030908c0a230b0c26d6e3649a90d2
Merge remote-tracking branch 'bender/5899_filter_on_backlog' into HEAD

* bender/5899_filter_on_backlog:
  Now we can filter on information in the backlog

Change-Id: Ied2c286e1d7a91c0a06e65b1fbc267a78a1d8a8f
This is Tuleap 6.9.99.36

Change-Id: I16f13fd1e85ed52fbc7c13374cd73e2783a83c03