Kanban can uses only trackers not used in Scrum

This task is part of story #7577 display a Kanban cardwall

A tracker in planning / backlog cannot be selected in Kanban creation form.
A tracker used in Kanban cannot be selected in planning form

Change-Id: Ifd85433193545e376e811185ef6f9213d2cba0cf
Tracker with a hierarchy are not selectable for new Kanban

This task is part of story #7577 display a Kanban cardwall

Change-Id: I9b95466a640a937bf79ebbdcaaeb1b986be69c6d
Deleted trackers don't appear in Kanban creation

This task is part of story #7577 display a Kanban cardwall

Change-Id: I224a7470c88dcbd5264abfc73c97fd03f89facd2
Merge commit 'refs/changes/35/3335/1' of ssh://gerrit.tuleap.net:29418/tuleap into stable

* ssh://gerrit.tuleap.net:29418/tuleap:
  Deleted trackers don't appear in Kanban creation
  Tracker with a hierarchy are not selectable for new Kanban
  Kanban can uses only trackers not used in Scrum
This is Tuleap 7.7.99.65

Change-Id: Iaf95e27861bdefbf0ae0140720dde786d1b1d157