Textual content from "generator.yml" is placed to "sf_admin" i18n dictionary

Can you be a bit more explicit about the problem? Can you give some examples?

Ok. Here is an more detailed example. To see it, You must:

1) Create module, that is represented as admin generator (so this module can be customized by editing generator.yml file, located in the "config" subdirectory of the module directory.

2) Add some batch actions:

batch_actions:
  _delete: ~
  activate:   ~
  deactivate: ~
  markAsTemplatePage: { label: "Mark as Template Page" }
  markAsRegularPage: { label: "Mark as Regular Page" } 

3) Look at the generated cache files for that module and opening file '/templates/_list_batch_actions.php'. This file contains strings:

<option value=""><?php echo __('Choose an action', array(), 'sf_admin') ?></option>
    <option value="batchDelete"><?php echo __('Delete', array(), 'sf_admin') ?></option>
    <option value="batchActivate"><?php echo __('Activate', array(), 'sf_admin') ?></option>
    <option value="batchDeactivate"><?php echo __('Deactivate', array(), 'sf_admin') ?></option>
    <option value="batchMarkAsTemplatePage"><?php echo __('Mark as Template Page', array(), 'sf_admin') ?></option>
    <option value="batchMarkAsRegularPage"><?php echo __('Mark as Regular Page', array(), 'sf_admin') ?></option>

As we can see - all labels, that are generated, are placed into 'sf_admin' dictionary. But I think, labels for custom actions must be placed into dictionary, that is passed as 'i18n_catalogue' param in generator.yml file.