Add basic Buefy support for merging 2 objects

i.e. special grid stuff, plus "merge" view

tailbone/templates/grids/buefy.mako

@@ -84,6 +84,13 @@
      :loading="loading"
      :row-class="getRowClass"
 
+     % if grid.checkboxes:
+     checkable
+     :checked-rows.sync="checkedRows"
+     ## TODO: definitely will be wanting this...
+     ## :is-row-checkable=""
+     % endif
+
      :default-sort="[sortField, sortOrder]"
      backend-sorting
      @sort="onSort"
@@ -161,6 +168,8 @@
               sortField: '${grid.sortkey}',
               sortOrder: '${grid.sortdir}',
               rowStatusMap: ${json.dumps(grid_data['row_status_map'])|n},
+              ## TODO: should be dumping json from server here
+              checkedRows: [],
 
               % if grid.pageable:
               % if static_data:
@@ -307,6 +316,14 @@
               if (confirm("You are about to delete " + this.total + " ${grid.model_title_plural}.\n\nAre you sure?")) {
                   event.target.form.submit()
               }
+          },
+
+          checkedRowUUIDs() {
+              var uuids = [];
+              for (var row of this.$data.checkedRows) {
+                  uuids.push(row.uuid)
+              }
+              return uuids
           }
       }