NOJS Changes (and some others imps.)

admin.(min.)css
remove many display;none

class.clef-admin.php
add a settings link in plugin list

class.clef-setup.php
improvement, $wpdb->query versus delete_metadata()

form.tpl.php
add many hideif-js and hide-if-no-js css classes
add some missing __() and _e()
submit_button() added
remove some "clef" i18n useless domain (already i18n by WP)
globaly changes for NOJS support