New hook to notify plugins of user profile changes ('auth_profile_update_data')

[YongBoLiu]

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We need a hook for plugins to update customize profile data, as we did for clear/reset in api_auth_clear_user_settings()/api_auth_clear_user_setting().

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Add a hook, such as auth_profile_update_data, to update plugin's profile data. Then other plugins can update their profile data to their own DB table.

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The code change like below,

diff -u -N rtm/cacti/auth_profile.php rtm/cacti/auth_profile.php
--- rtm/cacti/auth_profile.php	2019-02-28 10:52:54.000000028 +0800
+++ rtm/cacti/auth_profile.php	2019-04-29 10:03:18.000000424 +0800
@@ -51,7 +51,12 @@
 		$name  = get_nfilter_request_var('name');
 		$value = get_nfilter_request_var('value');
 
-		api_auth_update_user_setting($name, $value);
+		$current_tab = get_nfilter_request_var('tab');
+		if ($current_tab == 'general') {
+			api_auth_update_user_setting($name, $value);
+		} else {
+			api_plugin_hook_function('auth_profile_update_data', $current_tab);
+		}
 
 		break;
 	default: