enable dragging and creating empty boards

NB: this changes all can? checks in board.html admin_list, this should be project dependent clientside

app/helpers/boards_helper.rb

@@ -9,7 +9,7 @@ module BoardsHelper
       lists_endpoint: board_lists_path(board),
       board_id: board.id,
       board_milestone_title: board&.milestone&.title,
-      disabled: "#{!can?(current_user, :admin_list, @project)}",
+      disabled: "#{!can?(current_user, :admin_list, current_board_parent)}",
       issue_link_base: @issues_path,
       root_path: root_path,
       bulk_update_path: @bulk_issues_path,

app/views/shared/boards/components/_board.html.haml

@@ -12,7 +12,7 @@
         .issue-count-badge.pull-right.clearfix{ "v-if" => 'list.type !== "blank"' }
           %span.issue-count-badge-count.pull-left{ ":class" => '{ "has-btn": list.type !== "closed" && !disabled }' }
             {{ list.issuesSize }}
-          - if can?(current_user, :admin_issue, current_board_parent)
+          - if can?(current_user, :admin_list, current_board_parent)
             %button.issue-count-badge-add-button.btn.btn-small.btn-default.has-tooltip.js-no-trigger-collapse{ type: "button",
               "@click" => "showNewIssueForm",
               "v-if" => 'list.type !== "closed"',