Fixed issue with sortable not working after deleting list

app/assets/javascripts/boards/components/board.js.es6

@@ -43,6 +43,8 @@
         group: 'boards',
         animation: 150,
         draggable: '.is-draggable',
+        handle: '.js-board-handle',
+        filter: '.board-delete',
         forceFallback: true,
         fallbackClass: 'is-dragging',
         ghostClass: 'is-ghost',

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

@@ -2,7 +2,7 @@
   .board{ ":class" => "{ 'is-draggable': !isPreset }" }
     .board-inner
       %header.board-inner-container.board-header{ ":class" => "{ 'has-border': board.label }", ":style" => "{ borderTopColor: board.label.color }" }
-        %h3.board-title
+        %h3.board-title.js-board-handle
           {{ board.title }}
           %span.pull-right{ "v-if" => "board.type !== 'blank'" }
             {{ board.issues.length }}