Fixes initial redirect after user registers to use a custom submit handler rather than the hook_user so the rest of the registration submit handlers are not effected
- Added a custom #after_build function to the admin form that adds a .htaccess file preventing access to the index files through the browser. Visiting the /admin/settings/luceneapi_node page will automatically add the .htaccess file to the Search Lucene Content index directory if one doesn't already exist.