Do not display "Scrum" title when there is only Scrum

+ Refactoring to extract kanban home in a dedicated mustache file

This is part of story #7577 display a Kanban cardwall

Change-Id: I45fca516bd8e1dd6fcd9d554a82e0a46b7347cce
Display the name of the current kanban

This is part of story #7577 display a Kanban cardwall

Change-Id: I02f07085bff7f430a254a5cbbeb1c282448439ba
Refactoring: remove not needed dependency on project_id

tracker_id implies project_id, therefore we do not need to store project_id alongside tracker_id in kanban configuration table.

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

Change-Id: I44bd9a0550767ac6d73123deab261dd9054f811c
Do not load planning-v2 js on kanban page

This is part of story #7577 display a Kanban cardwall

Change-Id: I76e40eacde0fda3446fe746eb7df693b9cf8699b
Merge commit 'refs/changes/16/3316/3' of ssh://gerrit.tuleap.net:29418/tuleap into stable

* ssh://gerrit.tuleap.net:29418/tuleap:
  Do not load planning-v2 js on kanban page
  Refactoring: remove not needed dependency on project_id
  Display the name of the current kanban
  Do not display "Scrum" title when there is only Scrum
This is Tuleap 7.7.99.52

Change-Id: Id52c78a77cab57fff56f2b8128fd11bae28232c7