add stats setting

Signed-off-by: Diego Andrés <diegoandres_cortes@outlook.com>

Author: DiegoAndresCortes

Themes/default/languages/SimpleReferrals/.english.php

@@ -21,4 +21,8 @@
 $txt['SimpleReferrals_allow_select_desc'] = 'If enabled, guests will not be able to search/set forum users in the signup form, can only use direct referral links.';
 $txt['SimpleReferrals_enable_posts'] = 'Enable referrals count in posts';
 $txt['SimpleReferrals_enable_profile'] = 'Enable referrals count in profile';
-$txt['SimpleReferrals_display_link'] = 'Display the referral link in profile';
+$txt['SimpleReferrals_display_link'] = 'Display the referral link in profile';
+
+// Stats
+$txt['SimpleReferrals_enable_stats'] = 'Display top referrers in the forum stats';
+$txt['top_most_referrals'] = 'Most referrals';