[IMP]]hide the link add a new column,edit and delete in kanban if the user has not the right to do it.
[MERGE]sync with trunk.
[MERGE]sync with trunk.
[MERGE] [IMP] ir_ui_view: kanban view: also add action_enabled information
about the columns in kanban view. This allows to display the 'create a new column', as well as 'edit' or 'delete'
options on column in kanban view, based on the users' access rights.