related to #2158 update user and guest pop in

- Implementation of a new modal for modifying a user or guest
- Addition of a function to allow plugins to add a tab to the new user modal
- Fix bug: "badger-number" is updated when a user is added or deleted
- Fix bug: When the user who is editing has permissions to delete the user he is modifying, the delete icon is now displayed correctly
- Added a new api method for modifying the main user and generating a link to reset a password
- Passed $conf[‘webmaster_id’] in database configuration

include/config_default.inc.php

@@ -579,9 +579,6 @@ $conf['default_user_id'] = $conf['guest_id'];
 // if language isn't available PHPWG_DEFAULT_LANGUAGE is used as previously
 $conf['browser_language'] = true;
 
-// webmaster_id : webmaster'id.
-$conf['webmaster_id'] = 1;
-
 // does the guest have access ?
 // (not a security feature, set your categories "private" too)
 // If false it'll be redirected from index.php to identification.php