[skip ci] Fix label headers for issue boards, rename to badge

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

@@ -14,7 +14,7 @@
         %span.has-tooltip{ "v-if": "list.type === \"label\"",
           ":title" => '(list.label ? list.label.description : "")',
           data: { container: "body", placement: "bottom" },
-          class: "label color-label title board-title-text",
+          class: "badge color-label title board-title-text",
           ":style" => "{ backgroundColor: (list.label && list.label.color ? list.label.color : null), color: (list.label && list.label.color ? list.label.text_color : \"#2e2e2e\") }" }
           {{ list.title }}
         - if can?(current_user, :admin_list, current_board_parent)